Results 51 to 60 of about 14,507 (167)

Glacier Flow and the Growth of the Glacier Grain [PDF]

Journal of Glaciology, 1947
The crystallographic results of the Jungfraujoch Research Party’s investigations were published in the Proceedings of the Royal Society in August 1939. It has since occurred to me that insufficient attention was drawn to another factor affecting the movement and growth of the glacier grain ...
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Spatial Distribution and Characteristics of Debris-Covered Glaciers in Xinjiang Based on CGI-XJ2020

Remote Sensing
Debris cover is widespread on glaciers and strongly alters their surface albedo, energy balance, and ablation. Using the Chinese Glacier Inventory of Xinjiang 2020 (CGI-XJ2020), this study investigates the spatial distribution of debris-covered glaciers ...
Zexin Zhan, Zhongqin Li, Jianxin Mu, Feiteng Wang, Qibin Liang, Qian Wang, Wei Chen, Yefei Yang, Weibo Zhao   +8 more
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Clay minerals and elemental composition of smectites in the marine sediment from the southwest Ross Sea and implication for their provenance and sediment input changes after the last glacial period

Geoscience Letters
Smectite in detrital sediments can be composed of various proportions of Al, Mg, and Fe, indicating the sediment sources derived from the bedrock or from the sedimentary strata. Comparing the elemental composition of smectites can help to define sediment
Young Kyu Park, Jae Il Lee, Kyu-Cheul Yoo, Hanbeom Park, Jaewoo Jung   +4 more
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Allanite U–Pb step-leaching ages of metapelites in the Imjingang belt, central Korea

Journal of Analytical Science and Technology
Background Allanite is a LREE-rich epidote-group mineral, and a potential chronometer for the greenschist-facies metamorphism. However, owing to the metamict nature of allanite, it is extremely difficult to secure sufficient amounts of mineral separates ...
Seunghee Han, Yoonsup Kim, Taehoon Kim, Mi Jung Lee   +3 more
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The potential role of Arctic seaway expansion in driving the Mid-Pleistocene Transition

Communications Earth & Environment
The Mid-Pleistocene Transition between ~ 1.25 and 0.7 million years ago is a critical interval in Quaternary climate history, marked by a shift in glacial-interglacial cyclicity from ~ 41,000 to ~ 100,000 years, yet its cause remains debated.
Kwangchul Jang, Germain Bayon, Yeongcheol Han, Young Jin Joe, Sang-Yoon Jun, Yeong Ju Son, Jens Matthiessen, Matt O’Regan, Christoph Vogt, Ruediger Stein, Tatsuhiko Sakamoto, Eunji Byun, Kyung Sik Woo, Seung-Il Nam   +13 more
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Bacterial diversity and biopotentials of Hamtah glacier cryoconites, Himalaya

Frontiers in Microbiology
Cryoconite is a granular structure present on the glaciers and ice sheets found in polar regions including the Himalayas. It is composed of organic and inorganic matter which absorb solar radiations and reduce ice surface albedo, therefore impacting the ...
Purnima Singh, Shiv Mohan Singh, Takahiro Segawa, Prashant Kumar Singh   +3 more
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Greenlandic water bears reveal a new morphological trait of external head sensory organs

Scientific Reports
Tardigrades are microscopic panarthropods renowned for their ability to undergo cryptobiosis. While integrative taxonomy of tardigrades has been intensively applied in the description of tardigrade species over the past two decades, many details of their
Ji-Hoon Kihm, Krzysztof Zawierucha, Hyun Soo Rho, Tae-Yoon S. Park   +3 more
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Glacier or Not? The Importance of Nuance in Definitions of Vanishing Glaciers

Annals of Glaciology
Glaciers provide critical ecosystem services, including water resources, biodiversity, cultural value, and climate signals. But what makes a glacier a glacier? Dierent definitions of what characterizes a glacier can conflict with each other. While a common definition emphasizes "past or present flow," practical applications involve various criteria ...
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Informing adaptive management to reduce ungulate aggregations: A case study involving winter feeding of elk

Wildlife Society Bulletin
In the United States, wildlife managers are entrusted with preserving culturally and economically important ungulate populations in the face of the ongoing spread of chronic wasting disease (CWD). The U.S.
William M. Janousek, Eric K. Cole, Sarah R. Dewey, Tabitha A. Graves   +3 more
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Offshore evidence for volcanic landslide post Last Glacial Maximum at sub-Antarctic Heard Island, southern Indian Ocean

Volcanica
Heard Island, an active sub-Antarctic intraplate volcanic island on the Kerguelen Plateau, is mostly covered by glaciers. The amphitheatre shaped summit of the active volcanic centre, Big Ben (2813 m), has been interpreted to be the product of a ...
Jodi M. Fox, Sally J. Watson, Trevor J. Falloon, Rebecca J. Carey, Joanne M. Whittaker, Erica A. Spain, Robert A. Duncan, Richard J. Arculus, Millard F. Coffin   +8 more
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