The Juneau Icefield is a geological icefield located just north and east of Juneau, Alaska and continues north to the Skagway, Alaska area. Current research of Climate Change in the field of Glaciology relies upon comparison of historical glacier mass-balance to current conditions. The United States Geological Survey (USGS) historical topographic maps, some more than 65 years old, are useful to a glaciologist in determining glacier change.
These maps were provided by the United States Geological Survey (USGS) [1] and archived to Wikimedia Commons. They are scanned (by the USGS) images of the original paper maps that were published from 1948 to 1997. The information contained in the table below was transcribed from the paper map images displayed in the Image Array.
Quadrangle | Date | Field | Topographic | Remarks | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Area | Map | Published [lower-alpha 1] | Revised [lower-alpha 2] | Aerial Photo [lower-alpha 3] | Annotated | Checked | Scale | Contour | Download [lower-alpha 4] | Notes |
Atlin | A-7 | 1960 | 1948 | 1960 | No | 1:63360 | 100 | [HM 1] | Mount London, Mount Service, Mount Poletica | |
Atlin | A-8 | 1960 | 1948/1961 | 1960 | No | 1:63360 | 100 | [HM 2] | Mount Pullen, Meade Glacier | |
Atlin | B-8 | 1960 | 1948 | 1960 | No | 1:63360 | 100 | [HM 3] | Snowtop Mountain | |
Juneau | B-1 | 1997 | 1996 | 1997 | No | 1:63360 | 100 | [HM 4] | Norris Glacier, Taku Glacier terminus | |
Juneau | B-2 | 1949 | Sept, 1942 | No | 1:63360 | 100 | [HM 5] | Mendenhall Glacier | ||
Juneau | B-3 | 1949 | Sept, 1942 | No | 1:62500 | 100 | [HM 6] | Auke Bay, Alaska | ||
Juneau | C-1 | 1960 | 1971 | 1947 | 1960 | No | 1:63360 | 100 | [HM 7] | Matthes Glacier, Demorest Glacier |
Juneau | C-2 | 1960 | 1948 | No | 1:63360 | 100 | [HM 8] | Taku Glacier, Mendenhall Glacier, Herbert Glacier | ||
Juneau | C-3 | 1975 | 1996 | 1947 | No | 1:63360 | 100 | [HM 9] | Eagle Glacier | |
Juneau | D-1 | 1960 | 1975 | 1948/61 | No | 1:63360 | 100 | [HM 10] | ||
Juneau | D-2 | 1997 | 1996 | No | 1:63360 | 100 | [HM 11] | Bucher Glacier, Gilkey (lower) | ||
Juneau | D-3 | 1953 | 1948 | No | 1:63360 | 100 | [HM 12] | |||
Juneau | D-4 | 1951 | July, 1948 | No | 1:63360 | 100 | [HM 13] | Mid Lynn Canal | ||
Skagway | A-1 | 1951 | August, 1948 | No | 1:63360 | 100 | [HM 14] | |||
Skagway | B-1 | 1951 | July, 1948 | No | 1:63360 | 100 | [HM 15] | |||
Taku River | B-5 | 1951 | 1948 | No | 1:63360 | 100 | [HM 16] | Wright Glacier | ||
Taku River | B-6 | 1948 | 1951 | No | 1:63360 | 100 | [HM 17] | South of Taku River | ||
Taku River | C-5 | 1960 | 1948 | No | 1:63360 | 100 | [HM 18] | Wright Glacier | ||
Taku River | C-6 | 1960 | 1995 | 1947 | No | 1:63360 | 100 | [HM 19] | Twin Glaciers | |
Notes
The Municipality and Borough of Skagway is a first-class borough in Alaska on the Alaska Panhandle. As of the 2020 census, the population was 1,240, up from 968 in 2010. The population doubles in the summer tourist season in order to deal with more than 1,000,000 visitors each year. Incorporated as a borough on June 25, 2007, it was previously a city in the Skagway-Yakutat-Angoon Census Area. The most populated community is the census-designated place of Skagway.
The White Pass and Yukon Route is a Canadian and U.S. Class III 3 ft narrow-gauge railroad linking the port of Skagway, Alaska, with Whitehorse, the capital of Yukon. An isolated system, it has no direct connection to any other railroad. Equipment, freight and passengers are ferried by ship through the Port of Skagway, and via road through a few of the stops along its route.
Mendenhall Glacier is a glacier about 13.6 miles (21.9 km) long located in Mendenhall Valley, about 12 miles (19 km) from downtown Juneau in the southeast area of the U.S. state of Alaska. The glacier and surrounding landscape is protected as part of the 5,815 acres (2,353 ha) Mendenhall Glacier Recreation Area, a federally designated unit of the Tongass National Forest.
Juneau International Airport is a city-owned, public-use airport and seaplane base located seven nautical miles northwest of the central business district of Juneau, a city and borough in the U.S. state of Alaska that has no direct road access to the outside world. The airport serves as a regional hub for all air travel, from bush carriers to major U.S. air carriers such as Alaska Airlines.
The Boundary Ranges, also known in the singular and as the Alaska Boundary Range, are the largest and most northerly subrange of the Coast Mountains. They begin at the Nass River, near the southern end of the Alaska Panhandle in the Canadian province of British Columbia and run to the Kelsall River, near the Chilkoot Pass, beyond which are the Alsek Ranges of the Saint Elias Mountains, and northwards into the Yukon Territory flanking the west side of the Yukon River drainage as far as Champagne Pass, north of which being the Yukon Ranges. To their east are the Skeena Mountains and Stikine Plateau of the Interior Mountains complex that lies northwest of the Interior Plateau; the immediately adjoining subregion of the Stikine Plateau is the Tahltan Highland. To their northeast is the Tagish Highland, which is a subregion of the Yukon Plateau. Both highlands are considered in some descriptions as included in the Coast Mountains. The Alexander Archipelago lies offshore and is entirely within Alaska.
Atlin is a community in northwestern British Columbia, Canada, located on the eastern shore of Atlin Lake. In addition to continued gold-mining activity, Atlin is a tourist destination for fishing, hiking and Heliskiing. As of 2016, there are 477 permanent residents.
GeoRSS is a specification for encoding location as part of a Web feed. (Web feeds are used to describe feeds of content, such as news articles, Audio blogs, video blogs and text blog entries. These web feeds are rendered by programs such as aggregators and web browsers.) The name "GeoRSS" is derived from RSS, the most known Web feed and syndication format.
Carpenter Island (historical) is located on the southern end of the Chester River on Chesapeake Bay in Queen Anne's County, Maryland. It has been known as Carpenter Island or Carpenter's Island since the early 18th century.
The Stikine Region is an unincorporated area in northwestern British Columbia, Canada. It is the only area in the province that is not part of a regional district. The Stikine Region was left unincorporated following legislation that established the province's regional districts in 1968 and is not classified as a regional district. It contains no municipal governments which normally constitute the majority of seats on the boards of regional districts. There is only one local planning area, the Atlin Community Planning Area, which was combined in 2009 with the Atlin Community Improvement District to provide fire, landfill, water, streetlighting, sidewalks and advisory land use services. All other services not provided privately are administered directly by various provincial government ministries. The area around Dease Lake, formerly in the Stikine Region, is now within the boundaries of the Regional District of Kitimat–Stikine following a boundary amendment in 2008.
The Army Map Service (AMS) was the military cartographic agency of the United States Department of Defense from 1941 to 1968, subordinated to the United States Army Corps of Engineers. On September 1, 1968, the AMS was redesignated the U.S. Army Topographic Command (USATC) and continued as an independent organization until January 1, 1972, when it was merged into the new Defense Mapping Agency (DMA) and redesignated as the DMA Topographic Center (DMATC). On October 1, 1996, DMA was folded into the National Imagery and Mapping Agency (NIMA), which was redesignated as the National Geospatial-Intelligence Agency (NGA) in 2003.
Southport is an unincorporated locale in Coos County, Oregon, United States. It was located along Southport Creek, near where the creek flows into Isthmus Slough, 6.5 miles (10 km) south of the city of Coos Bay, at an elevation of 30 feet. The former community is now a ghost town.
The geospatial summary of the High Peaks/Summits of the Juneau Icefield is a compilation of the basic geospatial properties of the peaks/summits within the general area of the Juneau Icefield located North and East of Juneau, Alaska extending north to Skagway, Alaska. The peaks are classified by elevation: 2000 m, 2050 m, 2100 m, 2150 m, 2200 m, 2250 m, 2300 m and above 2400 m. Most of the 272 summits compiled have not been assigned an official name by the United States Geological Survey (USGS) Geographic Names Information System (GNIS) and as such are delineated as "Un-Named".
Arolik is a former Yup'ik settlement and ghost town in Bethel Census Area, Alaska, United States. It was located at the North mouth of Arolik River adjacent to the shore of Kuskokwim Bay. The site is approximately 4 miles south of the city of Quinhagak. It was first surveyed for the 1880 U.S. Census by Ivan Petroff and reported as "Agaligamute".
The Snow Towers is a 7,100+ ft glaciated mountain summit located in the Boundary Ranges of the Coast Mountains, in the U.S. state of Alaska. The two peaks, 0.1 mi apart, are situated at the apex of the Taku and Herbert Glaciers near the western edge of the Juneau Icefield, 23 mi (37 km) north of Juneau, 1.8 mi (3 km) southwest of Snowpatch Crag, and 6.3 mi (10 km) northeast of Mount Ernest Gruening, on land managed by Tongass National Forest. The mountain was named by members of the Juneau Icefield Research Project in 1964, and was officially adopted in 1965 by the U.S. Board on Geographic Names. The first ascent was made in 1984 by Charles "Dick" Ellsworth and Bruce Tickell.
Taku Towers is a 6,653+ ft double summit mountain located in the Boundary Ranges of the Coast Mountains, in the U.S. state of Alaska. The two north and south peaks, 0.2 mi apart with 6,653+ and 6,605-ft elevations respectively, are situated in the Taku Range of the Juneau Icefield, 21 mi (34 km) north of Juneau, Alaska, and 5.5 mi (9 km) east-southeast of The Snow Towers, on land managed by Tongass National Forest. The Taku Range is a north-south trending ridge on the edge of the Taku Glacier. The mountain's name was in local use when first published in 1960 by the U.S. Geological Survey. Several landforms in the vicinity bear this Taku name, which all ultimately derive from the Taku people. The first ascent was made in 1949 by Forbes, Merritt, and Schoeblen via the west ridge. Daniel Reid and party made the first ascent of the difficult east face of South Taku Tower in 1973.
Slanting Peak is a 5,200+ ft glaciated mountain summit located in the Boundary Ranges of the Coast Mountains, in the U.S. state of Alaska. The peak is situated in the southern portion of the Juneau Icefield, 18 mi (29 km) northeast of Juneau, and 2.4 mi (4 km) northeast of Guardian Mountain, which is its nearest neighbor. Slanting Peak is surrounded by the North Branch Norris Glacier to its west, and Taku Glacier on the east, and set on land managed by Tongass National Forest. This peak's descriptive name was published in 1960 by the U.S. Geological Survey.
Snowpatch Crag is a 6,345 ft (1,930 m) elevation glaciated mountain summit located in the Boundary Ranges of the Coast Mountains, in the U.S. state of Alaska. Snowpatch Crag is a nunatak surrounded by the Taku Glacier, and is situated near the west side of the Juneau Icefield, 25 mi (40 km) north of Juneau, and 1.8 mi (3 km) northeast of The Snow Towers, on land managed by Tongass National Forest. The mountain was named by members of the Juneau Icefield Research Project in 1964, and was officially adopted in 1965 by the U.S. Board on Geographic Names. Variant names for this geographic feature are "Snowpatch Peak" and "Snowpatch Craig."
Nelles Peak is a remote 2,531-metre (8,304-foot) mountain summit located in the Coast Mountains of British Columbia, Canada. It is situated at the northeastern periphery of the Juneau Icefield, 5.0 km (3.1 mi) inside the BC-Alaska boundary, on the west side of Tulsequah Lake. Its nearest higher peak is Devils Paw, 9.0 km (5.6 mi) to the southeast. Nelles Peak is the second-highest summit of the icefield, after Devils Paw. The mountain was named in 1924 to honor Douglas H. Nelles (1881–1960), a Canadian engineer who participated with the International Boundary Survey party of 1907. The mountain's name was officially adopted in 1947 when approved by the Geographical Names Board of Canada.
Egnell Creek is a tributary of the Hackett River in northwest part of the province of British Columbia, Canada. It flows generally southwest about 24 km (15 mi) to join the Hackett River near the Hackett's confluence with the Sheslay River, which in turn is a tributary of the Inklin River, the main southeast fork of the Taku River. Mount Egnell is located near the creek's mouth, as is the historic locality known as Egnell or Sheslay, once a telegraph station on the Yukon Telegraph Line.
USGS Historical Maps(HM)