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Does the latest update on Aug 8th actually make sense? "The size of the rockfalls from the lava dome have grown considerably and are threatening to cause massive, if not lifelessly dangerous, damage across the Philippines." What is the "if not lifelessly dangerous" meant to mean? -- Nunners 14:26, 8 August 2006 (UTC)
The insertion of the image of the major volcanos in the Philippines has led to the suppression of the bullet point markers in the main text. Anyone know a neat solution or workaround? DFH 15:46, 8 August 2006 (UTC)
According to [1] the most recent eruption of the 200m high Leonard Kniaseff was 1,800 years B.P. (Before Present). I fail to see how this paucity of data should lead to it being classified as an "active" volcano. DFH 18:34, 9 August 2006 (UTC)
Why does Volcano have a capital V in this page title? DFH 12:20, 10 August 2006 (UTC)
Please date all new additions to the 2006 activity section, and if possible also cite the information source as a reference. DFH 13:34, 11 August 2006 (UTC)
Isn't it proper to include a discussion on the danger zones? Note that PhiVolcs discussed the idea of classifying the areas of and those surrounding the volcano. the first 6-kilometer radius is considered as the permanent danger zone, the 6-8 kilometer radius is a partially dangerous zone, etc. User: Tikboyblue 16:24, 15 August 2006
I heard it just erupted. Anyone have confirmation of this? ~ magbatz 02:08, 7 January 2007 (UTC)
Then:
I have reviewed this article and this appears to be all it needs at the moment. Meldshal42 Comments and Suggestions My Contributions 20:32, 11 April 2008 (UTC)
I moved specific material from that article to /Extra
As of 17 December 2009 (today) Mayon is currently erupting. It is inaccurate to change the infobox today to read "currently erupting as of November 11th, 2009" Gubernatoria ( talk) 23:19, 17 December 2009 (UTC)
An anonymous vandal keeps removing the following paragraph from the article saying that it is "not an eruption since it is not level 5". This is odd because Phivolcs considers it an eruption, plus the current eruption is not level 5 either. Perhaps the anonymous contributor might leave well alone in future, or risk being cited for edit-warring.
What vandalism? Nowhere in the source does it say that it was an eruption. To quote in detail from the 'read more' link-
Add how not a single news agency brought up this very minor volcanic activity from 2008, it's very clear that it wasn't a noteworthy incident. -- 112.203.95.233 ( talk) 09:57, 23 December 2009 (UTC)
The recent anonymous revandalisation again has been reverted. Gubernatoria ( talk) 00:59, 24 December 2009 (UTC)
You were not justified in removing that part of the article. Whether it was wanton anonymous vandalism or just ignorant anonymous vandalism on your part, it was unjustified removal of relevant factual material. Gubernatoria ( talk) 04:35, 27 December 2009 (UTC)
Note that this earlier version of the article cited this supporting source at the Smithsonian Museum of Natural History which characterizes the 2008 activity as an eruption (the "Last Known Eruption", in fact, which would make the current activity just "activity". That was removed in this edit, and "Last eruption" redone to refer to the current activity, supported by by Phivolcs sources which don't describe the current activity as an eruption. Wtmitchell (talk) (earlier Boracay Bill) 21:39, 28 December 2009 (UTC)
Nevermind, I found new refs that show both the 2008 and 2009 activities are considered as eruptions. -- 112.203.95.233 ( talk) 08:41, 29 December 2009 (UTC)
Guber, please stop removing the citations, they are needed to show the volcano is currently erupting. Going from the alert level chart of Mayon Volcano alone does not lead to a definite conclusion on whether the volcano's current activity can be considered an eruption, the citations include statements from PHIVOLCS representatives that show the present status of the volcano. -- 112.203.95.233 ( talk) 09:28, 30 December 2009 (UTC)
This American site: [ Fox] has an article about the fact that magma continues to build up inside this volcano. Agre22 ( talk) 17:33, 26 December 2009 (UTC)agre22
Does the following sentence need to remain in the introduction, or can it now be deleted as out-of-date?
On October 13, 2008 it was included in New7Wonders of Nature Top 10 list. However, it did not make the cut to the Top 25 finalists, giving way to the Puerto Princesa Subterranean River, another site in the Philippines.
Gubernatoria ( talk) 13:43, 28 December 2009 (UTC)
Would two (or more) uninvolved and well-experienced editors please assess this article to see if it meets A-Class Criteria, and if not, what improvements are needed. Thanks. Gubernatoria ( talk) 13:54, 28 December 2009 (UTC)
I think the article is now well-organised and essentially complete and worthy of consideration as A-Class. But like the previous commentator, I am not an uninvolved editor. Gubernatoria ( talk) 01:10, 29 December 2009 (UTC)
When I completed writing the 2006 activity section, it was after activity ceased, and a lot of daily material was removed at that stage. The volcano is currently erupting (effusing lava, ejecting ash, releasing sulphur dioxide = erupting), and there is a daily interest in the eruption. When current activity ceases is the time we have reduced the amount of content from a daily listing to a more generalised description, with past eruptions. That should still seem to be a suitable timeframe. Gubernatoria ( talk) 13:36, 30 December 2009 (UTC)
Because Philippine cities often include vast tracts of rural areas, they are not "cities" in the usual urban sense of the word. Legally, Mayon forms the northern apex of Legazpi City. Therefore the argument about whether it is 12, 15, or 16 kilomotres from "Legazpi City" misses the legality. It could be beneficial to mention distance from the Capitol, or perhaps the airport, since these are specific locations and not diverse spreads like the legal entity of Legazpi City. I changed the reference in the article to match the legal reality. Gubernatoria ( talk) 01:07, 29 December 2009 (UTC)
Currently erupting references moved from info box: [3] [4] [5] Gubernatoria ( talk) 05:18, 30 December 2009 (UTC)
Mayon did not wait for Phivolcs to hoist Alert Level 3. It was erupting before then. I am (again) removing your misinformation from the info box. People can look at the 2009 activity section to find verification, and use their common sense plus an english language dictionary. Gubernatoria ( talk) 14:53, 30 December 2009 (UTC)
Guber wanted to keep Runway.jpg in article mainspace since it shows the "relationship between Mayon and Lignon Hill"... but there's already a picture in the gallery which shows the same scenery in better focus and with less Philippine Airlines advertising. -- 112.203.95.233 ( talk) 12:04, 30 December 2009 (UTC)
The reference for the 10 July 2009 eruption was provided by me in my edit of 13:36 30 October 2009 which originally read:
But some meddlesome interferor later removed the reference. Gubernatoria ( talk) 15:05, 30 December 2009 (UTC)
I removed the blockquote but I did NOT remove the reference. The citation is still there in my edit 332991306. Gubernatoria ( talk) 03:31, 31 December 2009 (UTC)
I've reinserted a link to the original reference and blockquote, plus your suggested ref Wtmitchell, plus the commercial ref provided by 112.203.95.233, which should cover all bases. Gubernatoria ( talk) 15:51, 1 January 2010 (UTC)
Will summarize this over the next day or so. -- 112.203.95.233 ( talk) 08:17, 2 January 2010 (UTC)
---
On 21 December 2009, Phivolcs raised the status to Alert Level 4 meaning a hazardous explosive eruption is possible within days. [7]
On 22 December 2009 at 7am, Phivolcs noted an intense level of activity with an increase in sulphur dioxide emission to 6529 tonnes per day, lava flow down three separate gullies to a distance of 5 kilometres from the summit, 1266 volcanic earthquakes many at maximum deflection in the past 24 hours, audible booming and rumbling sounds, and intensified crater glow. [8]
On 23 December 2009 at 7am, Phivolcs noted 66 ash explosions had been observed in the previous 24 hours when visibility was good enough, producing grayish to light brown ash columns that reached heights of 100 to 1000 meters above the summit. Sulphur Dioxide emission increased slightly over the prior 24 hour period. 280 audible booming and rumbling sounds were intermittently heard in the previous 24 hours, while red hot lava continuously flowed down the Bonga-Buyuan, Miisi and Lidong gullies. [7]
On 24 December 2009, Phivolcs noted in the past 24 hours 21 ash explosions were observed, with the ash columns reaching heights of up to 1500 metres above the summit. Lava fountaining, reaching a maximum height of 500 meters above the crater rim was observed at 11.12pm, 11.14pm, 11.20pm and 11.32pm December 23, 2009. Sulphur dioxide emission was slightly lower than for the previous 24 hour period. In the 24 hour seismological recording period to 4.14pm 23 December, 815 volcanic earthquakes tremors were recorded, many at maximum deflection. [9]
On 25 December 2009, Phivolcs observed 96 ash explosions in the prior 24 hours reaching heights of up to 2000 metres. 125 rumbling and booming sounds were heard at the Lignon Hill Observatory. 871 volcanic earthquakes were recorded. 98 rock falls were noted related to detachment of lava fragments from the upper slopes. Three rockfalls generated pyroclastic flows which moved down about 2000 metres from the crater. Sulphur dioxide emission dropped to 2,738 tonnes for the previous day. [10]
On 26 December 2009, Phivolcs reported observing 33 dirty white to brownish ash columns reaching up to 1,000 metres above the summit. 26 rumbling and 2 hissing sounds were heard at Phivolcs' Lignon Hill Observatory. 406 volcanic earthquakes were recorded. 142 lava fragment rock falls were detected. Flowing red hot lava and rolling incandescent lava fragments were continuously observed at Bonga, Padang and Miisi gullies. Sulphur dioxide emission jumped to 8,993 tonnes for 25 December. [11]
On 27 December 2009, for the 24 hours to 7am, Phivolcs reported the eruption of 9 dirty white to brownish ash columns with lava fragments, which reached heights from 800 to 1000 metres above the summit. 7 of the ash eruptions occurred in less than 2 hours from 4.20am to 5.49am on 27 December. 44 volcanic earthquakes and 297 lava fragment rock falls were detected. Flowing red hot lava and rolling incandescent lava fragments temporarily slowed down after the 10.52am explosion earthquake on 26 December, with a concommitant decrease in sulphur dioxide emission rate from the previous 8,993 tonnes per day to 2,304 tonnes on 26 December. Lava flow resumed after the 4.20am 27 December ash ejection. Despite the high volume of lava extruded since the start of the eruption on 14 December, 2009, the magma chamber below the summit is still inflated, as indicated by electronic tilt meter measurements on the northwest slope at 800m ASL elevation. [12]
On 28 December 2009, for the 24 hours to 7am, Phivolcs reported observing 7 dirty white to light grey ash explosions reaching about 2000 metres above the summit. 44 volcanic earthquakes and 137 lava fragment rock falls were detected. Red hot lava continuously flowed down along the usual 3 gullies. Intermittent rolling of incandescent lava fragments was also observed. Sulphur dioxide emission rate increased to 4,329 tonnes per day. [13] The government's principal volcanologist, Renato Solidum, was reported to have said the previous afternoon on radio that the magma chamber is swelling. "You might think it is taking a break but the volcano is still swelling," [14] If the magma chamber is increasing in size, as is suggested by the quotation, this could be ominous of an impending major eruption.
On 29 December 2009, Phivolcs reported no significant variation from the previous day's report, but included a civil aviation warning for the first time. [15]
On 30 December 2009, Phivolcs reported a reduction in ash explosions to just one rising only 200 metres above the summit. Lava continued to flow down the usual three gullies, to about 5.9 kilometres from the summit down the Bonga-Buyuan gully. The number of volcanic earthquakes dropped to 16 from 38 for the previous 24 hour reporting period. Sulphur dioxide emission increased to 4397 tonnes from 3416 the previous day. The northeast electronic tilt meter shows the magma chamber remains inflated, although Phivolcs' bulletin has not reported any increase in the size of the inflation. [16]
On 31 December 2009, Phivolcs reported a further reduction in eruptive activity. No ash ejections were observed and only very weak to moderate white steam emissions were observed. Volcanic earthquakes dropped to 60 and sulphur dioxide emission decreased to 1158 tonnes for the 24 hour reporting period. The northeast electronic tilt meter continues to show the volcano is inflated with magma below the summit. [17] If Mayon follows its pattern of 2008, lava will continue to quietly erupt from the edifice until the magma chamber deflates, and activity will cease for this period. If Mayon follows its pattern of 1993, the current apparent quietening would be due to the vent becoming choked or plugged, and the vent would likely be unplugged by a spectacularly hazardous eruption. The key indicator is the tilt meter measurement of inflation on the northeast slope. While the volcano remains inflated, there is high risk of a hazardous eruption. If the current effusion of lava sufficiently deflates the magma chamber, it is most likely there will be no hazardous eruption in this eruptive cycle.
On 01 January 2010, Phivolcs reported a further reduction in eruptive activity. No ash ejection was observed and only weak to moderate emission of white steam at the summit crater was seen during cloudbreaks. Volcanic earthquakes dropped to 28. Lava continued to flow down the slopes from the summit but lava fragment rockfalls dropped to 91. Sulphur dioxide emission rate was about the same as the previous day at 1255 tonnes. Tilt meter readings were not mentioned in the Phivolcs bulletin. [18].
I have reduced the alert level 4 daily log from twelve paragraphs to two. For the first paragraph I used the one in the lead of the article which describes the start of alert level 4, while the second paragraph is a more detailed summary for the rest of alert level 4 from late December to the decrease to alert level 3 on January 2. I also included an estimate of the volcanic material erupted so far. -- 112.203.95.233 ( talk) 03:28, 3 January 2010 (UTC)
As follows:
On December 20, 2009, PHIVOLCS raised Mayon's status level to alert level 4 because of an increasing lava flow in the southern portion of the volcano and an increase in sulphur dioxide emission to 750 tonnes per day. As well, almost 460 earthquakes in the volcano were monitored everyday. In the border of danger zone, rumbling sounds like thunder were also heard. Over 9,000 families (44,394 people) were evacuated by the Philippine government from the base of the volcano. [19] No civilian was permitted within the 8 kilometre danger zone, which has been cordoned off by the Philippine military, who were actively patrolling within the danger zone to enforce the "no-go" rule and to ensure no damage or loss of property of those evacuated. [14]
Alert level 4 was maintained as the volcano remained restive through the month of December, prompting affected residents to spend Christmas and the New Year in evacuation centers. [20] On December 25, sulfur dioxide emissions peaked at 8,993 tons per day. [11] [21] On December 28, PHIVOLCS director Renato Solidum commented on the status of the volcano, "You might think it is taking a break but the volcano is still swelling." [14] On the next day December 29, a civil aviation warning for the airspace near the summit was included in the volcano bulletins. [15] The ejected volcanic material since the start of the eruption was estimated to have been between 20 million to 23 million cubic meters of rocks and volcanic debris, compared to 50 million to 60 million cubic meters in past eruptions. [22]
OK. The volcano seems to have quieted down for now. The last_eruption= parameter in the infobox says, "2010. Alert Level 1 (no hazardous eruption imminent) is in effect.", citing Mayon Volcano Bulletin March 2, 2010, 10:00 A.M., PHIVOLCS. However, AFAICS, that cited source does not support the characterization of the recent period of activity as an eruption.
This source, which has been cited in support of the content of this infobox field in versions of this article prior to the recent period of activity still says, "Last Known Eruption: 2009". So, the questions arise: (1) what date(s) should this article give for the last eruption, and (2) what supporting source(s) should be cited.
Editorial opinions? Comments? Wtmitchell (talk) (earlier Boracay Bill) 21:40, 11 March 2010 (UTC)
Having seen no comment, I've changed the last eruption date back to the cite-supported 2009 date. Wtmitchell (talk) (earlier Boracay Bill) 07:03, 14 March 2010 (UTC)
All opinions welcome. Thank you. walk victor falk talk 20:59, 5 April 2011 (UTC)
I saw this edit in passing. I don't have time to fiddle with this just now but it struck me that perhaps a citation or two might help. Sined themee the following, which I'll mention though I have not exam: [3], [4], [5], [6], [7], [8], [9], [10]. This tool (shown with example URL loaded) can be used to generate a fleshed-out cite from a Google Books URL. Wtmitchell (talk) (earlier Boracay Bill) 09:41, 7 April 2011 (UTC)
I uploaded this version:
SpeakFree (talk) 19:10, 27 April 2011 (UTC)
{{
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The result of the move request was: pages moved as there is a clear consensus for a primary topic. ( non-admin closure) Merry Christmas and Happy New Year, GeoffreyT2000 ( talk, contribs) 23:09, 30 December 2016 (UTC)
– WP:Concise and WP:Commonname: The article uses both "Mount Mayon" and "Mayon Volcano", however, the only consistent name used throughout is the name without a modifier, simply Mayon. All three names are common but the single name may be the most common of the three. WP:Primary topic: The only other similarly named article is Mayon, Cornwall which is receiving significantly less views than this article. Shhhhwwww!! ( talk) 22:25, 23 December 2016 (UTC)
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I think that section should be eruptions since the activity of the volcano is just eruptions. Itsquietuptown ( talk) 11:59, 27 January 2018 (UTC)
'no i think it should not because volcano doesn't erupt daily like for example: first was inflation , 2nd days was only smoke's' Yournewsboy ( talk) 10:37, 30 January 2018 (UTC)
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Bitwitch08 ( talk) 19:29, 29 January 2018 (UTC)
Please change, Mayon Volcano is always been and will always be in Legazpi Albay not in Naga City, it can be seen in Naga but it's far from Naga. Please correct. Here's the link to prove Mayon Volcano is in Legazpi Albay that includes google map. Please correct, Mayon Volcano is in Province of Legazpi Albay. https://www.google.com/maps/place/Mayon+Volcano/@13.5484293,118.2409828,5.75z/data=!4m8!1m2!2m1!1sPhilippines+government+%2B+mayon+volcano!3m4!1s0x33a1a9954fa1731f:0xdff71d3eddd0ea0d!8m2!3d13.254832!4d123.6861124 https://www.britannica.com/place/Mayon-Volcano https://geographic.org/geographic_names/name.php?uni=-3362132&fid=5014&c=philippines
Full Name (see definition): Mayon Volcano
Primary Country Code (see definition): RP (Philippines)
First-order administrative division code (see definition): 05 (Albay )
Region Font Code (see definition): 5 (Asia/Pacific)
Unique Feature Identifier (see definition): -2439611
Unique Name Identifier (see definition): -3362132
Latitude in decimal degrees (see definition): 13.255278
Longitude in decimal degrees (see definition): 123.686389
Latitude in degrees, minutes, and seconds (see definition): 13° 15' 19" N
Longitude in degrees, minutes, and seconds (see definition): 123° 41' 11" E
Military Grid Reference System coordinates (see definition): 51PWQ7435865468
Joint Operations Graphic reference (see definition): ND51-11
there's already alot of activities must be added because of recent Catastrophic
Due to the recent vandalism activities done by a presumably not yet autoconfirmed user, I believe we should semi-protect this page to prevent vandalism. Itsquietuptown ( talk) 06:51, 11 February 2018 (UTC)
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This is the
talk page for discussing improvements to the
Mayon article. This is not a forum for general discussion of the article's subject. |
Article policies
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Find sources: Google ( books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL |
![]() | This article is written in Philippine English, which has its own spelling conventions (color, realize, center, travelled) and some terms that are used in it (including jeepney and cyberlibel) may be different or absent from other varieties of English. According to the relevant style guide, this should not be changed without broad consensus. |
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![]() | A fact from this article was featured on Wikipedia's Main Page in the On this day section on February 1, 2011, February 1, 2014, February 1, 2021, and February 1, 2024. |
Does the latest update on Aug 8th actually make sense? "The size of the rockfalls from the lava dome have grown considerably and are threatening to cause massive, if not lifelessly dangerous, damage across the Philippines." What is the "if not lifelessly dangerous" meant to mean? -- Nunners 14:26, 8 August 2006 (UTC)
The insertion of the image of the major volcanos in the Philippines has led to the suppression of the bullet point markers in the main text. Anyone know a neat solution or workaround? DFH 15:46, 8 August 2006 (UTC)
According to [1] the most recent eruption of the 200m high Leonard Kniaseff was 1,800 years B.P. (Before Present). I fail to see how this paucity of data should lead to it being classified as an "active" volcano. DFH 18:34, 9 August 2006 (UTC)
Why does Volcano have a capital V in this page title? DFH 12:20, 10 August 2006 (UTC)
Please date all new additions to the 2006 activity section, and if possible also cite the information source as a reference. DFH 13:34, 11 August 2006 (UTC)
Isn't it proper to include a discussion on the danger zones? Note that PhiVolcs discussed the idea of classifying the areas of and those surrounding the volcano. the first 6-kilometer radius is considered as the permanent danger zone, the 6-8 kilometer radius is a partially dangerous zone, etc. User: Tikboyblue 16:24, 15 August 2006
I heard it just erupted. Anyone have confirmation of this? ~ magbatz 02:08, 7 January 2007 (UTC)
Then:
I have reviewed this article and this appears to be all it needs at the moment. Meldshal42 Comments and Suggestions My Contributions 20:32, 11 April 2008 (UTC)
I moved specific material from that article to /Extra
As of 17 December 2009 (today) Mayon is currently erupting. It is inaccurate to change the infobox today to read "currently erupting as of November 11th, 2009" Gubernatoria ( talk) 23:19, 17 December 2009 (UTC)
An anonymous vandal keeps removing the following paragraph from the article saying that it is "not an eruption since it is not level 5". This is odd because Phivolcs considers it an eruption, plus the current eruption is not level 5 either. Perhaps the anonymous contributor might leave well alone in future, or risk being cited for edit-warring.
What vandalism? Nowhere in the source does it say that it was an eruption. To quote in detail from the 'read more' link-
Add how not a single news agency brought up this very minor volcanic activity from 2008, it's very clear that it wasn't a noteworthy incident. -- 112.203.95.233 ( talk) 09:57, 23 December 2009 (UTC)
The recent anonymous revandalisation again has been reverted. Gubernatoria ( talk) 00:59, 24 December 2009 (UTC)
You were not justified in removing that part of the article. Whether it was wanton anonymous vandalism or just ignorant anonymous vandalism on your part, it was unjustified removal of relevant factual material. Gubernatoria ( talk) 04:35, 27 December 2009 (UTC)
Note that this earlier version of the article cited this supporting source at the Smithsonian Museum of Natural History which characterizes the 2008 activity as an eruption (the "Last Known Eruption", in fact, which would make the current activity just "activity". That was removed in this edit, and "Last eruption" redone to refer to the current activity, supported by by Phivolcs sources which don't describe the current activity as an eruption. Wtmitchell (talk) (earlier Boracay Bill) 21:39, 28 December 2009 (UTC)
Nevermind, I found new refs that show both the 2008 and 2009 activities are considered as eruptions. -- 112.203.95.233 ( talk) 08:41, 29 December 2009 (UTC)
Guber, please stop removing the citations, they are needed to show the volcano is currently erupting. Going from the alert level chart of Mayon Volcano alone does not lead to a definite conclusion on whether the volcano's current activity can be considered an eruption, the citations include statements from PHIVOLCS representatives that show the present status of the volcano. -- 112.203.95.233 ( talk) 09:28, 30 December 2009 (UTC)
This American site: [ Fox] has an article about the fact that magma continues to build up inside this volcano. Agre22 ( talk) 17:33, 26 December 2009 (UTC)agre22
Does the following sentence need to remain in the introduction, or can it now be deleted as out-of-date?
On October 13, 2008 it was included in New7Wonders of Nature Top 10 list. However, it did not make the cut to the Top 25 finalists, giving way to the Puerto Princesa Subterranean River, another site in the Philippines.
Gubernatoria ( talk) 13:43, 28 December 2009 (UTC)
Would two (or more) uninvolved and well-experienced editors please assess this article to see if it meets A-Class Criteria, and if not, what improvements are needed. Thanks. Gubernatoria ( talk) 13:54, 28 December 2009 (UTC)
I think the article is now well-organised and essentially complete and worthy of consideration as A-Class. But like the previous commentator, I am not an uninvolved editor. Gubernatoria ( talk) 01:10, 29 December 2009 (UTC)
When I completed writing the 2006 activity section, it was after activity ceased, and a lot of daily material was removed at that stage. The volcano is currently erupting (effusing lava, ejecting ash, releasing sulphur dioxide = erupting), and there is a daily interest in the eruption. When current activity ceases is the time we have reduced the amount of content from a daily listing to a more generalised description, with past eruptions. That should still seem to be a suitable timeframe. Gubernatoria ( talk) 13:36, 30 December 2009 (UTC)
Because Philippine cities often include vast tracts of rural areas, they are not "cities" in the usual urban sense of the word. Legally, Mayon forms the northern apex of Legazpi City. Therefore the argument about whether it is 12, 15, or 16 kilomotres from "Legazpi City" misses the legality. It could be beneficial to mention distance from the Capitol, or perhaps the airport, since these are specific locations and not diverse spreads like the legal entity of Legazpi City. I changed the reference in the article to match the legal reality. Gubernatoria ( talk) 01:07, 29 December 2009 (UTC)
Currently erupting references moved from info box: [3] [4] [5] Gubernatoria ( talk) 05:18, 30 December 2009 (UTC)
Mayon did not wait for Phivolcs to hoist Alert Level 3. It was erupting before then. I am (again) removing your misinformation from the info box. People can look at the 2009 activity section to find verification, and use their common sense plus an english language dictionary. Gubernatoria ( talk) 14:53, 30 December 2009 (UTC)
Guber wanted to keep Runway.jpg in article mainspace since it shows the "relationship between Mayon and Lignon Hill"... but there's already a picture in the gallery which shows the same scenery in better focus and with less Philippine Airlines advertising. -- 112.203.95.233 ( talk) 12:04, 30 December 2009 (UTC)
The reference for the 10 July 2009 eruption was provided by me in my edit of 13:36 30 October 2009 which originally read:
But some meddlesome interferor later removed the reference. Gubernatoria ( talk) 15:05, 30 December 2009 (UTC)
I removed the blockquote but I did NOT remove the reference. The citation is still there in my edit 332991306. Gubernatoria ( talk) 03:31, 31 December 2009 (UTC)
I've reinserted a link to the original reference and blockquote, plus your suggested ref Wtmitchell, plus the commercial ref provided by 112.203.95.233, which should cover all bases. Gubernatoria ( talk) 15:51, 1 January 2010 (UTC)
Will summarize this over the next day or so. -- 112.203.95.233 ( talk) 08:17, 2 January 2010 (UTC)
---
On 21 December 2009, Phivolcs raised the status to Alert Level 4 meaning a hazardous explosive eruption is possible within days. [7]
On 22 December 2009 at 7am, Phivolcs noted an intense level of activity with an increase in sulphur dioxide emission to 6529 tonnes per day, lava flow down three separate gullies to a distance of 5 kilometres from the summit, 1266 volcanic earthquakes many at maximum deflection in the past 24 hours, audible booming and rumbling sounds, and intensified crater glow. [8]
On 23 December 2009 at 7am, Phivolcs noted 66 ash explosions had been observed in the previous 24 hours when visibility was good enough, producing grayish to light brown ash columns that reached heights of 100 to 1000 meters above the summit. Sulphur Dioxide emission increased slightly over the prior 24 hour period. 280 audible booming and rumbling sounds were intermittently heard in the previous 24 hours, while red hot lava continuously flowed down the Bonga-Buyuan, Miisi and Lidong gullies. [7]
On 24 December 2009, Phivolcs noted in the past 24 hours 21 ash explosions were observed, with the ash columns reaching heights of up to 1500 metres above the summit. Lava fountaining, reaching a maximum height of 500 meters above the crater rim was observed at 11.12pm, 11.14pm, 11.20pm and 11.32pm December 23, 2009. Sulphur dioxide emission was slightly lower than for the previous 24 hour period. In the 24 hour seismological recording period to 4.14pm 23 December, 815 volcanic earthquakes tremors were recorded, many at maximum deflection. [9]
On 25 December 2009, Phivolcs observed 96 ash explosions in the prior 24 hours reaching heights of up to 2000 metres. 125 rumbling and booming sounds were heard at the Lignon Hill Observatory. 871 volcanic earthquakes were recorded. 98 rock falls were noted related to detachment of lava fragments from the upper slopes. Three rockfalls generated pyroclastic flows which moved down about 2000 metres from the crater. Sulphur dioxide emission dropped to 2,738 tonnes for the previous day. [10]
On 26 December 2009, Phivolcs reported observing 33 dirty white to brownish ash columns reaching up to 1,000 metres above the summit. 26 rumbling and 2 hissing sounds were heard at Phivolcs' Lignon Hill Observatory. 406 volcanic earthquakes were recorded. 142 lava fragment rock falls were detected. Flowing red hot lava and rolling incandescent lava fragments were continuously observed at Bonga, Padang and Miisi gullies. Sulphur dioxide emission jumped to 8,993 tonnes for 25 December. [11]
On 27 December 2009, for the 24 hours to 7am, Phivolcs reported the eruption of 9 dirty white to brownish ash columns with lava fragments, which reached heights from 800 to 1000 metres above the summit. 7 of the ash eruptions occurred in less than 2 hours from 4.20am to 5.49am on 27 December. 44 volcanic earthquakes and 297 lava fragment rock falls were detected. Flowing red hot lava and rolling incandescent lava fragments temporarily slowed down after the 10.52am explosion earthquake on 26 December, with a concommitant decrease in sulphur dioxide emission rate from the previous 8,993 tonnes per day to 2,304 tonnes on 26 December. Lava flow resumed after the 4.20am 27 December ash ejection. Despite the high volume of lava extruded since the start of the eruption on 14 December, 2009, the magma chamber below the summit is still inflated, as indicated by electronic tilt meter measurements on the northwest slope at 800m ASL elevation. [12]
On 28 December 2009, for the 24 hours to 7am, Phivolcs reported observing 7 dirty white to light grey ash explosions reaching about 2000 metres above the summit. 44 volcanic earthquakes and 137 lava fragment rock falls were detected. Red hot lava continuously flowed down along the usual 3 gullies. Intermittent rolling of incandescent lava fragments was also observed. Sulphur dioxide emission rate increased to 4,329 tonnes per day. [13] The government's principal volcanologist, Renato Solidum, was reported to have said the previous afternoon on radio that the magma chamber is swelling. "You might think it is taking a break but the volcano is still swelling," [14] If the magma chamber is increasing in size, as is suggested by the quotation, this could be ominous of an impending major eruption.
On 29 December 2009, Phivolcs reported no significant variation from the previous day's report, but included a civil aviation warning for the first time. [15]
On 30 December 2009, Phivolcs reported a reduction in ash explosions to just one rising only 200 metres above the summit. Lava continued to flow down the usual three gullies, to about 5.9 kilometres from the summit down the Bonga-Buyuan gully. The number of volcanic earthquakes dropped to 16 from 38 for the previous 24 hour reporting period. Sulphur dioxide emission increased to 4397 tonnes from 3416 the previous day. The northeast electronic tilt meter shows the magma chamber remains inflated, although Phivolcs' bulletin has not reported any increase in the size of the inflation. [16]
On 31 December 2009, Phivolcs reported a further reduction in eruptive activity. No ash ejections were observed and only very weak to moderate white steam emissions were observed. Volcanic earthquakes dropped to 60 and sulphur dioxide emission decreased to 1158 tonnes for the 24 hour reporting period. The northeast electronic tilt meter continues to show the volcano is inflated with magma below the summit. [17] If Mayon follows its pattern of 2008, lava will continue to quietly erupt from the edifice until the magma chamber deflates, and activity will cease for this period. If Mayon follows its pattern of 1993, the current apparent quietening would be due to the vent becoming choked or plugged, and the vent would likely be unplugged by a spectacularly hazardous eruption. The key indicator is the tilt meter measurement of inflation on the northeast slope. While the volcano remains inflated, there is high risk of a hazardous eruption. If the current effusion of lava sufficiently deflates the magma chamber, it is most likely there will be no hazardous eruption in this eruptive cycle.
On 01 January 2010, Phivolcs reported a further reduction in eruptive activity. No ash ejection was observed and only weak to moderate emission of white steam at the summit crater was seen during cloudbreaks. Volcanic earthquakes dropped to 28. Lava continued to flow down the slopes from the summit but lava fragment rockfalls dropped to 91. Sulphur dioxide emission rate was about the same as the previous day at 1255 tonnes. Tilt meter readings were not mentioned in the Phivolcs bulletin. [18].
I have reduced the alert level 4 daily log from twelve paragraphs to two. For the first paragraph I used the one in the lead of the article which describes the start of alert level 4, while the second paragraph is a more detailed summary for the rest of alert level 4 from late December to the decrease to alert level 3 on January 2. I also included an estimate of the volcanic material erupted so far. -- 112.203.95.233 ( talk) 03:28, 3 January 2010 (UTC)
As follows:
On December 20, 2009, PHIVOLCS raised Mayon's status level to alert level 4 because of an increasing lava flow in the southern portion of the volcano and an increase in sulphur dioxide emission to 750 tonnes per day. As well, almost 460 earthquakes in the volcano were monitored everyday. In the border of danger zone, rumbling sounds like thunder were also heard. Over 9,000 families (44,394 people) were evacuated by the Philippine government from the base of the volcano. [19] No civilian was permitted within the 8 kilometre danger zone, which has been cordoned off by the Philippine military, who were actively patrolling within the danger zone to enforce the "no-go" rule and to ensure no damage or loss of property of those evacuated. [14]
Alert level 4 was maintained as the volcano remained restive through the month of December, prompting affected residents to spend Christmas and the New Year in evacuation centers. [20] On December 25, sulfur dioxide emissions peaked at 8,993 tons per day. [11] [21] On December 28, PHIVOLCS director Renato Solidum commented on the status of the volcano, "You might think it is taking a break but the volcano is still swelling." [14] On the next day December 29, a civil aviation warning for the airspace near the summit was included in the volcano bulletins. [15] The ejected volcanic material since the start of the eruption was estimated to have been between 20 million to 23 million cubic meters of rocks and volcanic debris, compared to 50 million to 60 million cubic meters in past eruptions. [22]
OK. The volcano seems to have quieted down for now. The last_eruption= parameter in the infobox says, "2010. Alert Level 1 (no hazardous eruption imminent) is in effect.", citing Mayon Volcano Bulletin March 2, 2010, 10:00 A.M., PHIVOLCS. However, AFAICS, that cited source does not support the characterization of the recent period of activity as an eruption.
This source, which has been cited in support of the content of this infobox field in versions of this article prior to the recent period of activity still says, "Last Known Eruption: 2009". So, the questions arise: (1) what date(s) should this article give for the last eruption, and (2) what supporting source(s) should be cited.
Editorial opinions? Comments? Wtmitchell (talk) (earlier Boracay Bill) 21:40, 11 March 2010 (UTC)
Having seen no comment, I've changed the last eruption date back to the cite-supported 2009 date. Wtmitchell (talk) (earlier Boracay Bill) 07:03, 14 March 2010 (UTC)
All opinions welcome. Thank you. walk victor falk talk 20:59, 5 April 2011 (UTC)
I saw this edit in passing. I don't have time to fiddle with this just now but it struck me that perhaps a citation or two might help. Sined themee the following, which I'll mention though I have not exam: [3], [4], [5], [6], [7], [8], [9], [10]. This tool (shown with example URL loaded) can be used to generate a fleshed-out cite from a Google Books URL. Wtmitchell (talk) (earlier Boracay Bill) 09:41, 7 April 2011 (UTC)
I uploaded this version:
SpeakFree (talk) 19:10, 27 April 2011 (UTC)
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The result of the move request was: pages moved as there is a clear consensus for a primary topic. ( non-admin closure) Merry Christmas and Happy New Year, GeoffreyT2000 ( talk, contribs) 23:09, 30 December 2016 (UTC)
– WP:Concise and WP:Commonname: The article uses both "Mount Mayon" and "Mayon Volcano", however, the only consistent name used throughout is the name without a modifier, simply Mayon. All three names are common but the single name may be the most common of the three. WP:Primary topic: The only other similarly named article is Mayon, Cornwall which is receiving significantly less views than this article. Shhhhwwww!! ( talk) 22:25, 23 December 2016 (UTC)
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I think that section should be eruptions since the activity of the volcano is just eruptions. Itsquietuptown ( talk) 11:59, 27 January 2018 (UTC)
'no i think it should not because volcano doesn't erupt daily like for example: first was inflation , 2nd days was only smoke's' Yournewsboy ( talk) 10:37, 30 January 2018 (UTC)
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Bitwitch08 ( talk) 19:29, 29 January 2018 (UTC)
Please change, Mayon Volcano is always been and will always be in Legazpi Albay not in Naga City, it can be seen in Naga but it's far from Naga. Please correct. Here's the link to prove Mayon Volcano is in Legazpi Albay that includes google map. Please correct, Mayon Volcano is in Province of Legazpi Albay. https://www.google.com/maps/place/Mayon+Volcano/@13.5484293,118.2409828,5.75z/data=!4m8!1m2!2m1!1sPhilippines+government+%2B+mayon+volcano!3m4!1s0x33a1a9954fa1731f:0xdff71d3eddd0ea0d!8m2!3d13.254832!4d123.6861124 https://www.britannica.com/place/Mayon-Volcano https://geographic.org/geographic_names/name.php?uni=-3362132&fid=5014&c=philippines
Full Name (see definition): Mayon Volcano
Primary Country Code (see definition): RP (Philippines)
First-order administrative division code (see definition): 05 (Albay )
Region Font Code (see definition): 5 (Asia/Pacific)
Unique Feature Identifier (see definition): -2439611
Unique Name Identifier (see definition): -3362132
Latitude in decimal degrees (see definition): 13.255278
Longitude in decimal degrees (see definition): 123.686389
Latitude in degrees, minutes, and seconds (see definition): 13° 15' 19" N
Longitude in degrees, minutes, and seconds (see definition): 123° 41' 11" E
Military Grid Reference System coordinates (see definition): 51PWQ7435865468
Joint Operations Graphic reference (see definition): ND51-11
there's already alot of activities must be added because of recent Catastrophic
Due to the recent vandalism activities done by a presumably not yet autoconfirmed user, I believe we should semi-protect this page to prevent vandalism. Itsquietuptown ( talk) 06:51, 11 February 2018 (UTC)
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