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split+thumb Latitude and Longitude:

58°24′23″N 134°18′44″W / 58.40639°N 134.31222°W / 58.40639; -134.31222
From Wikipedia, the free encyclopedia
Split Thumb
Split Thumb, south aspect
Highest point
Elevation5,523 ft (1,683 m) [1]
Prominence923 ft (281 m) [1]
Parent peak Mount Wrather [2]
Isolation2.15 mi (3.46 km) [1]
Coordinates 58°24′23″N 134°18′44″W / 58.40639°N 134.31222°W / 58.40639; -134.31222 [1]
Geography
Split Thumb is located in Alaska
Split Thumb
Split Thumb
Location of Split Thumb in Alaska
CountryUnited States
State Alaska
Borough Juneau
Protected area Tongass National Forest
Parent range Coast Mountains
Boundary Ranges
Juneau Icefield [1]
Topo map USGS Juneau B-1
Geology
Age of rock Late Cretaceous
Type of rock Granitic
Volcanic arc/ belt Coast Range Arc
Climbing
First ascentJuly 2, 1954
Easiest route class 5.4 Southeast arête [3]

Split Thumb is a 5,523 ft (1,680 m) glaciated mountain summit located in the Boundary Ranges of the Coast Mountains, in the U.S. state of Alaska. [4] The peak is situated near the southern periphery of the Juneau Icefield, 9 mi (14 km) northeast of Juneau, 2.15 mi (3 km) southeast of Nugget Mountain, and 4 mi (6 km) east of Heintzleman Ridge, on land managed by Tongass National Forest. Split Thumb is surrounded by the Lemon Creek Glacier to the west, and Norris Glacier to east. The Split Thumb Icefall is set on the east aspect of the peak. [5] This peak's descriptive name was published in 1951 by the U.S. Geological Survey. [4] The first ascent of Split Thumb was made July 2, 1954, by a Juneau Icefield Research Project party comprising Edward LaChapelle, Dick Hubley, Carlton Ray, Dr. Conrad Buettner, and Bob Goodwin. [6]

Climate

Based on the Köppen climate classification, Split Thumb is located in a subarctic climate zone, with long, cold, snowy winters, and cool summers. [7] Weather systems coming off the Gulf of Alaska are forced upwards by the Coast Mountains ( orographic lift), causing heavy precipitation in the form of rainfall and snowfall. Winter temperatures can drop below 0 °F with wind chill factors below −10 °F. The month of July offers the most favorable weather to view or climb Split Thumb.

See also

Looking north at Split Thumb as seen from Observation Peak

References

  1. ^ a b c d e "Split Thumb, Alaska". Peakbagger.com. Retrieved 2020-03-27.
  2. ^ "Split Thumb". Bivouac.com. Retrieved 2020-03-27.
  3. ^ "Split Thumb - 5,523' Alaska". listsofjohn.com. Retrieved 2020-03-27.
  4. ^ a b "Split Thumb". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2020-03-27.
  5. ^ "Split Thumb Icefall". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2020-03-27.
  6. ^ "AAC Publications - North America, U.S., Alaska, Split Thumb, Juneau Ice Field".
  7. ^ Peel, M. C.; Finlayson, B. L.; McMahon, T. A. (2007). "Updated world map of the Köppen−Geiger climate classification". Hydrol. Earth Syst. Sci. 11 (5): 1633. Bibcode: 2007HESS...11.1633P. doi: 10.5194/hess-11-1633-2007. ISSN  1027-5606.

split+thumb Latitude and Longitude:

58°24′23″N 134°18′44″W / 58.40639°N 134.31222°W / 58.40639; -134.31222
From Wikipedia, the free encyclopedia
Split Thumb
Split Thumb, south aspect
Highest point
Elevation5,523 ft (1,683 m) [1]
Prominence923 ft (281 m) [1]
Parent peak Mount Wrather [2]
Isolation2.15 mi (3.46 km) [1]
Coordinates 58°24′23″N 134°18′44″W / 58.40639°N 134.31222°W / 58.40639; -134.31222 [1]
Geography
Split Thumb is located in Alaska
Split Thumb
Split Thumb
Location of Split Thumb in Alaska
CountryUnited States
State Alaska
Borough Juneau
Protected area Tongass National Forest
Parent range Coast Mountains
Boundary Ranges
Juneau Icefield [1]
Topo map USGS Juneau B-1
Geology
Age of rock Late Cretaceous
Type of rock Granitic
Volcanic arc/ belt Coast Range Arc
Climbing
First ascentJuly 2, 1954
Easiest route class 5.4 Southeast arête [3]

Split Thumb is a 5,523 ft (1,680 m) glaciated mountain summit located in the Boundary Ranges of the Coast Mountains, in the U.S. state of Alaska. [4] The peak is situated near the southern periphery of the Juneau Icefield, 9 mi (14 km) northeast of Juneau, 2.15 mi (3 km) southeast of Nugget Mountain, and 4 mi (6 km) east of Heintzleman Ridge, on land managed by Tongass National Forest. Split Thumb is surrounded by the Lemon Creek Glacier to the west, and Norris Glacier to east. The Split Thumb Icefall is set on the east aspect of the peak. [5] This peak's descriptive name was published in 1951 by the U.S. Geological Survey. [4] The first ascent of Split Thumb was made July 2, 1954, by a Juneau Icefield Research Project party comprising Edward LaChapelle, Dick Hubley, Carlton Ray, Dr. Conrad Buettner, and Bob Goodwin. [6]

Climate

Based on the Köppen climate classification, Split Thumb is located in a subarctic climate zone, with long, cold, snowy winters, and cool summers. [7] Weather systems coming off the Gulf of Alaska are forced upwards by the Coast Mountains ( orographic lift), causing heavy precipitation in the form of rainfall and snowfall. Winter temperatures can drop below 0 °F with wind chill factors below −10 °F. The month of July offers the most favorable weather to view or climb Split Thumb.

See also

Looking north at Split Thumb as seen from Observation Peak

References

  1. ^ a b c d e "Split Thumb, Alaska". Peakbagger.com. Retrieved 2020-03-27.
  2. ^ "Split Thumb". Bivouac.com. Retrieved 2020-03-27.
  3. ^ "Split Thumb - 5,523' Alaska". listsofjohn.com. Retrieved 2020-03-27.
  4. ^ a b "Split Thumb". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2020-03-27.
  5. ^ "Split Thumb Icefall". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2020-03-27.
  6. ^ "AAC Publications - North America, U.S., Alaska, Split Thumb, Juneau Ice Field".
  7. ^ Peel, M. C.; Finlayson, B. L.; McMahon, T. A. (2007). "Updated world map of the Köppen−Geiger climate classification". Hydrol. Earth Syst. Sci. 11 (5): 1633. Bibcode: 2007HESS...11.1633P. doi: 10.5194/hess-11-1633-2007. ISSN  1027-5606.

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