Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Anna Liljedahl"'
Autor:
Wenwen Li, Chia-Yu Hsu, Sizhe Wang, Yezhou Yang, Hyunho Lee, Anna Liljedahl, Chandi Witharana, Yili Yang, Brendan M. Rogers, Samantha T. Arundel, Matthew B. Jones, Kenton McHenry, Patricia Solis
Publikováno v:
Remote Sensing, Vol 16, Iss 5, p 797 (2024)
This paper assesses trending AI foundation models, especially emerging computer vision foundation models and their performance in natural landscape feature segmentation. While the term foundation model has quickly garnered interest from the geospatia
Externí odkaz:
https://doaj.org/article/cbc58a9c457941a3ae5a2b4e1d4fde77
Autor:
Mikhail Kanevskiy, Yuri Shur, D.A. (Skip) Walker, Torre Jorgenson, Martha K. Raynolds, Jana L. Peirce, Benjamin M. Jones, Marcel Buchhorn, Georgiy Matyshak, Helena Bergstedt, Amy L. Breen, Billy Connor, Ronald Daanen, Anna Liljedahl, Vladimir E. Romanovsky, Emily Watson-Cook
Publikováno v:
Arctic Science, Vol 8, Iss 2, Pp 498-530 (2022)
We studied processes of ice-wedge degradation and stabilization at three sites adjacent to road infrastructure in the Prudhoe Bay Oilfield, Alaska, USA. We examined climatic, environmental, and subsurface conditions and evaluated vulnerability of ice
Externí odkaz:
https://doaj.org/article/3b6f4357c8b1435c9c48d495919faff0
Autor:
Kimberley R. Miner, Seth Campbell, Christopher Gerbi, Anna Liljedahl, Therese Anderson, L. Brian Perkins, Steven Bernsen, Tiffany Gatesman, Karl J. Kreutz
Publikováno v:
Water, Vol 10, Iss 9, p 1157 (2018)
To assess the presence of organochlorine pollutants (OCP) in Alaskan sub-Arctic latitudes, we analyzed ice core and meltwater samples from Jarvis Glacier, a polythermal glacier in Interior Alaska. Jarvis Glacier is receding as atmospheric warming con
Externí odkaz:
https://doaj.org/article/2a326ae309d64c218d03ebbebdedf92b
Publikováno v:
Photogrammetric Engineering & Remote Sensing. 88:255-262
Commercial satellite sensors offer the luxury of mapping of individual permafrost features and their change over time. Deep learning convolutional neural nets (CNNs) demonstrate a remarkable success in automated image analysis. Inferential strengths
Autor:
Mahendra R. Udawalpola, Amit Hasan, Anna Liljedahl, Aiman Soliman, Jeffrey Terstriep, Chandi Witharana
Publikováno v:
Photogrammetric Engineering & Remote Sensing. 88:181-188
High-spatial-resolution satellite imagery enables transformational opportunities to observe, map, and document the micro-topographic transitions occurring in Arctic polygonal tundra at multiple spatial and temporal frequencies. Knowledge discovery th
Surface runoff from melting alpine glaciers increases until the glaciers reach a condition called “peak water” beyond which surface runoff decreases as ice volume diminishes. Recent research indicates that a fraction of this meltwater recharges m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b907b3e7eef3a7403fd33f34f85dfc88
https://doi.org/10.21203/rs.3.rs-2204053/v1
https://doi.org/10.21203/rs.3.rs-2204053/v1
Publikováno v:
Proceedings of the 5th ACM SIGSPATIAL International Workshop on AI for Geographic Knowledge Discovery.
Autor:
Helena Bergstedt, Benjamin Jones, Guido Grosse, Alexandra Veremeeva, Amy Breen, Anna Liljedahl, Annett Bartsch, Benjamin Gaglioti, Frédéric Bouchard, Gustaf Hugelius, Ingmar Nitze, Juliane Wolter, Kenneth Hinkel, Louise Farquharson, Matthias Fuchs, Mikhail Kanevskyi, Pascale Roy-Leveillee, Trevor Lantz
Lakes and drained lake basins (DLB) are ubiquitous landforms in permafrost regions. The long-term dynamics of lake formation and drainage is evident in the abundance of DLBs covering 50% to 75% of arctic permafrost lowlands in parts of arctic Alaska,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::538693954c0fe5a9041ec29c457dddaf
https://doi.org/10.5194/egusphere-egu22-9681
https://doi.org/10.5194/egusphere-egu22-9681
With the increased availability and coverage of high resolution satellite imagery, characterizing processes at the pan-Arctic scale is now possible. This baseline pan-Arctic product will enable us to highlight areas for future research efforts and to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::737bcd625688a34a6a0a68958b052aad
https://doi.org/10.5194/egusphere-egu2020-12142
https://doi.org/10.5194/egusphere-egu2020-12142
Autor:
Guido Grosse, Julia Boike, Louise Farquharson, Benjamin M. Jones, Moritz Langer, Hugues Lantuit, Anna Liljedahl, Ingmar Nitze, Alexandra Runge, Vladimir E. Romanovsky, Thomas Schneider von Deimling, Warwick F. Vincent, Donald A. (Skip) Walker
In this presentation, we will highlight some of the overarching geomorphic dynamics of gradual and abrupt permafrost thaw using examples from Siberia, Alaska, and Canada, their role in Arctic landscapes transitioning to a warmer world, and implicatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3955673d4b2c4b84a60f8262c17729b
https://doi.org/10.5194/egusphere-egu2020-11772
https://doi.org/10.5194/egusphere-egu2020-11772