muir glacier 1941

Muir Glacier in Alaska, as seen in 1941 and 2004 Credit: Photo courtesy of William Field (1941) and Bruce Molnia (2004) and the National Snow and Ice Data Center , University of Colorado, Boulder. For Muir, the movement of glaciers represented a key indicator of their status as what he called “living glaciers”, as detractors like Whitney routinely argued that Muir was confusing the presence of unmelted snowfields leftover from the winter for glaciers. Field, # 41-64, courtesy of the National Snow and Ice Data Center and Glacier Bay National Park and Preserve Archive. See the copyright page for more information. Photo 1: W. O. Just under 90 miles from Juneau, Muir Glacier was a popular stop for many tourists in the late 19th century, and still is today. It shows the lower reaches of Muir Glacier, then a large, tidewater calving valley glacier and its tributary, Riggs Glacier. The 3 pictures have the same field of view and record the changes that occurred during the 63 years separating 1941 and 2004. In the 1941, the terminus of the glacier is on the lower right corner of the photo. The séracs in the lower right-hand corner of the photograph mark Muir Glacier’s terminus. Muir Inlet, 1941-2004. Muir Glacier, Alaska, in 1941 (left) and 2004 (right). Photo 3: B. F. Molnia, USGS Photograph, Kim Weaver From 1941 to 2004, the front of the glacier moved back about seven miles while its thickness decreased by more than 2,625 feet, according to the National Snow and Ice Data Center. Did you know… that you can read the edge of Greenland’s ice as an open book? For nearly two centuries prior to 1941, Muir Glacier had been retreating. In places, more than a kilometer thickness of ice had been lost. How do the ups and downs of the solid Earth influence the future of the West Antarctic ice sheet? Would you like to write a blog entry about your research? Ocean water has … From 1941 to 2004, the glacier receded over 7 … Image 1: Muir Glacier, Alaska, 2004. Muir Glacier has undergone very rapid, well-documented retreat since its maximum position at the mouth of Glacier Bay around 1780. Unless otherwise indicated, the content on this blog is licensed under the Creative Commons Attribution 4.0 International licence (CC BY 4.0). Writes like a mad dervish, rolls to dodge responsibility, might have bitten the Moon once. The 3 pictures have the same field of view and record the changes that occurred during the 63 years separating 1941 and 2004. Education in glaciology: Witnessing the death of a glacier, 2.2 Hydrosphere/Cryosphere-Muir Alaskan Glacier. Mouse over the image to see the difference in the Muir Glacier between 1941 and 2004. From 1941 to 2004, the glacier receded over 7 … – Environmental Science-1301-Krystal Rocha, Your email address will not be published. By 2004 (right), Muir Glacier had retreated 12 kilometers (7 miles) and thinned by more than 800 meters (2,600 feet). Are glaciers changing? Pingback: 2.2 Hydrosphere/Cryosphere-Muir Alaskan Glacier. Muir Glacier and Inlet (1950) This photo from August 1950 is the first of two repeat photos to document the significant changes in the 9 years since the 1941 shot. USGS. Originally uploaded in Cutting Edge:Topics:Climate Change. Shown above is an image taken of the Muir glacier in Alaska in the year 1941, followed by an image of the glacier taken in 2004. Muir and his partner, Galen Clark, discovered that the Maclure Glacier was moving at an inch per day. In places, a thickness of more than two-thirds of a mile of ice had been lost. Please get in touch with the editor, Violaine Coulon. Muir Glacier and Inlet, 1890s – 2005. Muir Glacier, 1941. Between the 1890s and 2005, Muir retreated more than 30 miles, according to USGS. In places, more than a 1.0 kilometer (0.62 mile) thickness of ice had been lost. The Muir is a valley glacier (Alaska) that has significantly retreated over the last 2 centuries. Between 1941 (left) and 2004 (right), the Muir Glacier in Alaska retreated more than twelve kilometers (seven miles) and thinned by over 800 meters (2625 feet). For nearly two centuries before 1941, Muir Glacier had been retreating. By 2004, the Muir glacier has retreated further inland and its terminus is no longer visible on the picture. Muir Glacier, Alaska, August 13, 1941, photo by B.F. Molnia. It was a tidewater glacier, meaning that it flowed out onto the ocean. The images below show Muir Glacier, also in southern Alaska, first in August 1941 (left) and again in August 2004 (right). However, it still is connected with tributary Riggs Glacier. Muir and his partner, Galen Clark, discovered that the Maclure Glacier was moving at an inch per day. Creative Commons Attribution 4.0 International. "Forty-six gigatons of ice from Alaskan glaciers was lost on average each year from 2003 to 2010" (Source). This northeast-looking photograph, on the southeastern side of White Thunder Ridge ,shows the lower reaches of Muir Glacier, then a large tidewater calving valley glacier, and its tributary Riggs Glacier. 15 Muir Glacier, Alaska (August 1941/August 2004) While comparing the two photos of the Muir Glacier in Alaska, there has been an appalling transformation of the landscape within the past nineteen years. Muir and Riggs Glaciers 1941-2004 The upper Muir Inlet in the east arm of Glacier Bay has been completely transformed in 60 years. Maps showing retreat of Muir Glacier from 1941 to 1982 There are thousands of glaciers in Alaska but only few have been named. Alaska. – Environmental Science-1301-Krystal Rocha, Seafloor secrets: traces of the past Patagonian ice sheet. All in all, Muir documented 65 such living glaciers over … Muir and Riggs Glaciers, Alaska. She is using various remote sensing data and techniques to investigate the dynamics and stability of the ice shelves in Dronning Maud Land (East Antarctica). Muir Glacier has retreated nearly 2 miles, exposing Muir Inlet, and thinned by more than 300 feet. Muir Glacier has undergone very rapid, well-documented retreat since its Little Ice Age maximum position at the mouth of Glacier Bay around 1780. Muir Glacier in 1941 and 1950 The glacier has gone through a rapid retreat since its maximum position at the mouth of Glacier Bay in 1780, scaling back more than 12km between 1941 and 2004 alone. Photographs of the Muir Glacier taken in 1941 and 2004 showing the retreat of the glacier. Between the 1890s and 2005, Muir retreated more than 30 miles, according to … In 1794, the explorer Captain George Vancouver found that most of Glacier Bay was covered by an enormous ice sheet, some 1,200 meters (3,900 ft) in places. In the 1941, the terminus of the glacier is on the lower right corner of the photo. The once frozen Muir Glacier with snow-peaked mountains nearby in 1941 had turned into a lake having green trees around it by 2004. Global warming causes sea level to rise in two ways. "Forty-six gigatons of ice from Alaskan glaciers was lost on average each year from 2003 to 2010" (Source). The images below show Muir Glacier, also in southern Alaska, first in August 1941 (left) and again in August 2004 (right). Muir and Riggs Glaciers filled Muir Inlet. Alaska’s Muir Glacier, like many Alaskan glaciers, has retreated and thinned dramatically since the 19th century. (W.O. The Muir is a valley glacier (Alaska) that has significantly retreated over the last 2 centuries. All glacier images are all from Alaska, U.S. and were published by the National Snow and Ice Data Center - World Data Center for Glaciology (www.nsidc.org) Page numbers listed above correspond to the numbers on the following pages. McCarty Glacier, Alaska. 1941 to 2004 comparison: Glacier Bay National Park and Preserve's White Thunder Ridge as seen on August 13, 1941 (left) and August 31, 2004 (right). This northeast-looking photograph, on the southeastern side of White Thunder Ridge ,shows the lower reaches of Muir Glacier, then a large tidewater calving valley glacier, and its tributary Riggs Glacier. Thumbnail Medium Original. Such photographic evidence makes it hard to argue against climate change. 9 • Melting glaciers, which supply drinking and irrigation water for hundreds of millions of people around the world, will be lost. Does anyone have a current photo taken at the same location? While historical photos like these show change over many decades, satellites are giving us a better understanding of how Earth’s ice cover has changed in the more recent past. Selected Answer: d. estuary Correct Answer: d. estuary Question 7 4 out of 4 points The photos of the Muir Glacier taken in 1941 (left) and 2004 (right) demonstrate the consequences of____. Between 1941 (left) and 2004 (right), the Muir Glacier in Alaska retreated more than twelve kilometers (seven miles) and thinned by over 800 meters (2625 feet). The aim of the blog is to get you, the reader, excited about all things related to ice, whether it be the tiniest ice crystals, snow drifts, beautiful mountain glaciers or the vast polar ice sheets. Here, the latest fieldwork programmes, research projects or scientific results will be showcased by bloggers from the cryospheric community. Muir Glacier, Alaska, in 1941 (left) and 2004 (right). Between 1941 and 2004 the glacier retreated more than seven miles in distance and thinned by over 2625 feet by its thickness. Grinnell Glacier from Overlook 1940 – 2006. Carroll Glacier 1906 – 2004. Muir Glacier had been retreating since the mid-eighteenth century, with maximum retreat exceeding 50 kilometers. Photo 1: W. O. Back in 1925 Glacier Bay National Monument was established, in part, to protect "a number of tidewater glaciers ... in a magnificent setting of lofty peaks ..." Well, as these photos of Muir Glacier in Glacier Bay National Park and Preserve show, some of those glaciers are slip-sliding away. Muir Glacier has retreated 20 km (12 miles) between 1941 and 2004 (lower), and 45 km (28 miles) since 1899. The Riggs glacier is now disconnected to the Muir and has retreated by 0.25km. Image … All in all, Muir documented 65 such living glaciers … This 1941 photograph shows the lower reaches of Muir Glacier, then a large, tidewater calving valley glacier, and its tributary, Riggs Glacier. In 1941 (left), Muir Glacier filled this valley in Glacier National Park and Preserve in Alaska. Glacier covers most of photo, no water visible. AS BG CL CR ESSI G GD GM GMPV HS NH NP OS SM SSP SSS ST TS. She completed her PhD at the Université Libre de Bruxelles (ULB), Brussels, Belgium. 33 shares Martynas Klimas . For Muir, the movement of glaciers represented a key indicator of their status as what he called “living glaciers”, as detractors like Whitney routinely argued that Muir was confusing the presence of unmelted snowfields leftover from the winter for glaciers. Vegetation has invaded the place. Ocean water has … She tweets as, Cryospheric Sciences | Image of the Week : 63 years of the Muir Glacier’s retreat, The photo comes from and the text is inspired from the section “Repeat photography of the Alaskan Glaciers” on. Muir Glacier, Alaska. Unfortunately, Muir Glacier is rapidly receding. —Credit: Photographs by William Osgood Field (1941) and Bruce F. Molnia (2004). In 1941 (upper) the ice was about 1000m (3000 feet) deep, and 3 km (1.8 miles) wide. Muir Glacier, Alaska, in 1880 (left) and 2005 (right). The photo comes from and the text is inspired from the section “Repeat photography of the Alaskan Glaciers” on U.S. Geological Survey website. These photographs are from the National Snow and Ice Data Center's repeat photography project. Unfortunately, Muir Glacier is rapidly receding. According to a 1914 book from the National Geographic Society, the Muir Glacier was 25 to 40 miles further south in 1794 than the early 1900s. Be sure to catch Muir on your cruise through Glacier Bay! Got wisdom to pour? In 1941 (upper) the ice was about 1000m (3000 feet) deep, and 3 km (1.8 miles) wide. Between the mid-1920s and early 1940s, and August 10, 2005. click image for more information. Welcome to the blog of the Cryospheric Sciences (CR) Division of the European Geosciences Union (EGU). Selected Answer: a. global climate change Correct Answer: a. global climate change This contrasting and disturbing image spoke louder than any words had ever spoken before about this issue. A place to share meltdowns from your friends, family, fellow Redditors … Photo 2 : W. O. Iceberg Glacier ~1940 – 2008. The once frozen Muir Glacier with snow-peaked mountains nearby in 1941 had turned into a lake having green trees around it by 2004.

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