Showing 121 - 140 results of 146 for search '"Beaufort Sea"', query time: 0.09s Refine Results
  1. 121

    NETSIM: A Realtime Virtual Ocean Hardware-in-the-loop Acoustic Modem Network Simulator by Schneider, Toby, Schmidt, Henrik

    Published 2020
    “…The results demonstrate the performance of this system using the WHOI Micro-Modem 2 hardware in the virtual ocean environment of the Arctic Beaufort Sea around 73 degrees latitude. The acoustic environment in this area has changed dramatically in recent years due to the changing climate.…”
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  2. 122
  3. 123
  4. 124

    Investigating High-Resolution Spatial Wave Patterns on the Canadian Beaufort Shelf Using Synthetic Aperture Radar Imagery at Herschel Island, Qikiqtaruk, Yukon, Canada by Kerstin Brembach, Andrey Pleskachevsky, Hugues Lantuit

    Published 2023-09-01
    “…In this study, the Synthetic Aperture Radar (SAR) satellite TerraSAR-X (TS-X) and TanDEM-X (TD-X) imagery are used to obtain sea state information with a high spatial resolution in Arctic nearshore waters in the Canadian Beaufort Sea. From the entire archive of the TS-X/TD-X StripMap mode with coverage around 30 km × 50 km acquired between 2009 and 2020 around Herschel Island, Qikiqtaruk (HIQ), all the ice-free scenes were processed. …”
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  5. 125

    Seven Decades of Coastal Change at Barter Island, Alaska: Exploring the Importance of Waves and Temperature on Erosion of Coastal Permafrost Bluffs by Ann E. Gibbs, Li H. Erikson, Benjamin M. Jones, Bruce M. Richmond, Anita C. Engelstad

    Published 2021-11-01
    “…Acceleration in retreat rates at Barter Island may be related to increases in both thermodenudation, associated with increasing air temperature, and the number of niche-forming and block-collapsing episodes associated with higher air and water temperature, more frequent storms, and longer ice-free conditions in the Beaufort Sea.…”
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  6. 126

    Distribution, abundance and biology of ringed seals (<i>Phoca hispida</i>): an overview by Randall R Reeves

    Published 1998-06-01
    “…Large fluctuations in production of ringed seals in the Beaufort Sea and Amundsen Gulf are thought to be driven by natural variability in environmental conditions. …”
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  7. 127

    Winter Arctic sea ice thickness from ICESat-2: upgrades to freeboard and snow loading estimates and an assessment of the first three winters of data collection by A. A. Petty, A. A. Petty, N. Keeney, N. Keeney, A. Cabaj, P. Kushner, M. Bagnardi, M. Bagnardi

    Published 2023-01-01
    “…The updated monthly gridded thickness data are validated against ice draft measurements obtained by upward-looking sonar moorings deployed in the Beaufort Sea, showing strong agreement (<span class="inline-formula"><i>r</i><sup>2</sup></span> of 0.87, differences of 11 <span class="inline-formula">±</span> 20 <span class="inline-formula">cm</span>). …”
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  8. 128

    Deep Learning Based Sea Ice Classification with Gaofen-3 Fully Polarimetric SAR Data by Tianyu Zhang, Ying Yang, Mohammed Shokr, Chunlei Mi, Xiao-Ming Li, Xiao Cheng, Fengming Hui

    Published 2021-04-01
    “…The application of the MSI-ResNet method to data covering the Beaufort Sea and the north of the Severnaya Zemlya archipelago was found to achieve a high overall accuracy (kappa) of 94.62% (±0.92) and 94.23% (±0.90), respectively. …”
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  9. 129

    High resolution mapping shows differences in soil carbon and nitrogen stocks in areas of varying landscape history in Canadian lowland tundra by Julia Wagner, Victoria Martin, Niek J. Speetjens, Willeke A'Campo, Luca Durstewitz, Rachele Lodi, Michael Fritz, George Tanski, Jorien E. Vonk, Andreas Richter, Annett Bartsch, Hugues Lantuit, Gustaf Hugelius

    Published 2023-10-01
    “…Our aim was to map SOC stocks, and which environmental variables that determine SOC, in two adjacent coastal areas along Canadian Beaufort Sea coast with different glacial history. We used the machine learning technique random forest and environmental variables to map the spatial distribution of SOC stocks down to 1 m depth at a spatial resolution of 2 m for depth increments of 0–5, 5–15, 15–30, 30–60 and 60–100 cm.The results show that the two study areas had large differences in SOC stocks in the depth 60–100 cm due to high amounts of ground ice in one of the study areas. …”
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  10. 130

    Ground-ice origin and age on Herschel Island (Qikiqtaruk), Yukon, Canada by Sebastian Wetterich, Alexander I. Kizyakov, Thomas Opel, Hendrik Grotheer, Gesine Mollenhauer, Michael Fritz

    Published 2023-04-01
    “…Our study on Herschel Island (Qikiqtaruk, Beaufort Sea) re-examines previous data and applies stable-isotope and dissolved organic carbon (DOC) analyses as well as radiocarbon dating on DOC and particulate plant macrofossil remains preserved in massive ground ice, wedge ice and host deposits.Newly obtained DOC ages of the massive ice span from 32 220 to 25 830 cal BP and extend the only previously available direct age determination (CO2-derived radiocarbon age of 21 290 cal BP) properly into the Last Glacial Maximum as the formation time of the massive ice. …”
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  11. 131

    PANABIO: a point-referenced PAN-Arctic data collection of benthic BIOtas by D. Piepenburg, D. Piepenburg, D. Piepenburg, T. Brey, T. Brey, T. Brey, K. Teschke, K. Teschke, J. Dannheim, J. Dannheim, P. Kloss, M. Rehage, M. L. S. Hansen, C. Kraan, C. Kraan

    Published 2024-03-01
    “…The data cover the entire pan-Arctic realm, i.e. the central Arctic Ocean, Chukchi Sea, East Siberian Sea, Laptev Sea, Kara Sea, Barents Sea (including the White Sea), Svalbard waters, Greenland Sea, Norwegian Sea, Canadian Archipelago, Beaufort Sea, and Bering Sea as well as some adjacent sub-Arctic regions (Sea of Japan, Gulf of Okhotsk). …”
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  12. 132

    Arctic biogeochemical and optical properties of dissolved organic matter across river to sea gradients by Michael G. Novak, Michael G. Novak, Antonio Mannino, J. Blake Clark, J. Blake Clark, J. Blake Clark, Peter Hernes, Maria Tzortziou, Robert G. M. Spencer, Anne M. Kellerman, Brice Grunert, Brice Grunert

    Published 2022-09-01
    “…Here, we present measurements of dissolved organic carbon (DOC) and chromophoric DOM (CDOM) in the Yukon River-to-Bering Sea system and two river plumes on the Alaska North Slope which flow into the Beaufort Sea. Our sampling characterized optical and biogeochemical properties of DOM during high and low river discharge periods for the Yukon River-Bering Sea system. …”
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  13. 133

    A decade of remotely sensed observations highlight complex processes linked to coastal permafrost bluff erosion in the Arctic by Benjamin M Jones, Louise M Farquharson, Carson A Baughman, Richard M Buzard, Christopher D Arp, Guido Grosse, Diana L Bull, Frank Günther, Ingmar Nitze, Frank Urban, Jeremy L Kasper, Jennifer M Frederick, Matthew Thomas, Craig Jones, Alejandro Mota, Scott Dallimore, Craig Tweedie, Christopher Maio, Daniel H Mann, Bruce Richmond, Ann Gibbs, Ming Xiao, Torsten Sachs, Go Iwahana, Mikhail Kanevskiy, Vladimir E Romanovsky

    Published 2018-01-01
    “…This study increases the temporal fidelity of coastal permafrost bluff observations using near-annual high spatial resolution (<1 m) satellite imagery acquired between 2008–2017 for a 9 km segment of coastline at Drew Point, Beaufort Sea coast, Alaska. Our results show that mean annual erosion for the 2007–2016 decade was 17.2 m yr ^−1 , which is 2.5 times faster than historic rates, indicating that bluff erosion at this site is likely responding to changes in the Arctic System. …”
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  14. 134

    Nunataryuk field campaigns: understanding the origin and fate of terrestrial organic matter in the coastal waters of the Mackenzie Delta region by M. Lizotte, B. Juhls, B. Juhls, B. Juhls, A. Matsuoka, A. Matsuoka, P. Massicotte, G. Mével, D. O. J. Anikina, S. Antonova, G. Bécu, M. Béguin, S. Bélanger, T. Bossé-Demers, T. Bossé-Demers, L. Bröder, F. Bruyant, G. Chaillou, J. Comte, R.-M. Couture, R.-M. Couture, E. Devred, G. Deslongchamps, T. Dezutter, M. Dillon, D. Doxaran, A. Flamand, F. Fell, J. Ferland, J. Ferland, M.-H. Forget, M. Fritz, T. J. Gordon, C. Guilmette, A. Hilborn, R. Hussherr, R. Hussherr, C. Irish, F. Joux, L. Kipp, A. Laberge-Carignan, A. Laberge-Carignan, H. Lantuit, E. Leymarie, A. Mannino, J. Maury, P. Overduin, L. Oziel, L. Oziel, C. Stedmon, C. Thomas, L. Tisserand, J.-É. Tremblay, J. Vonk, D. Whalen, M. Babin

    Published 2023-04-01
    “…In the framework of the European Horizon 2020 Nunataryuk programme, and as part of the Work Package 4 (WP4) Coastal Waters theme, four field expeditions were conducted in the Mackenzie Delta region and southern Beaufort Sea from April to September 2019. The temporal sampling design allowed the survey of ambient conditions in the coastal waters under full ice cover prior to the spring freshet, during ice breakup in summer, and anterior to the freeze-up period in fall. …”
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  15. 135

    Regional Features of the Arctic Sea Ice Area Changes in 2000–2019 versus 1979–1999 Periods by Tatiana A. Matveeva, Vladimir A. Semenov

    Published 2022-09-01
    “…In summer and autumn, rates of SIA decline in 2000–2019 increased most strongly in the Kara, Beaufort Seas, the Northwestern Passage, and inner Arctic Ocean. …”
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  16. 136

    Field report: Exploring the Doonerak fenster of the central Brooks Range, Alaska, USA by Justin V. Strauss, Carl W. Hoiland, Lyle L. Nelson

    Published 2017-07-01
    “…Arctic Alaska is a ‘suspect’ terrane that encompasses approximately 20% of Alaska, stretching from the southern Brooks Range all the way to the continental shelves of the Chukchi and Beaufort Seas. Although the origin and subsequent travels of this large crustal fragment are debated among geologists, most researchers agree upon its composite nature and exotic origin. …”
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  17. 137

    Increasing coastal exposure to extreme wave events in the Alaskan Arctic as the open water season expands by Martin Henke, Tyler Miesse, André de Souza de Lima, Celso M. Ferreira, Thomas M. Ravens

    Published 2024-03-01
    “…All future scenarios and decades show an increase in coastal wave heights, demonstrating how an extended season of open water in the Chukchi and Beaufort Seas could expose Alaskan Arctic shorelines to wave hazards resulting from such a storm event for an additional winter month by 2050 and up to three additional months by 2070 depending on climate pathway. …”
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  18. 138

    Exploration technology for the Arctic by Bamford, D

    Published 2011
    “…Of course, onshore Arctic exploration and development has a significant history, notably in Alaska and West Siberia, and there has been intermittent exploration in the Barents, southern Kara, Chukchi and Beaufort Seas, so there are many ideas – both conceptual and proven – to look at.…”
    Journal article
  19. 139

    Less winter cloud aids summer 2013 Arctic sea ice return from 2012 minimum by Yinghui Liu, Jeffrey R Key

    Published 2014-01-01
    “…Most of this rebound in the ice cover was in the Chukchi and Beaufort Seas, areas experiencing the greatest decline in sea ice over the last three decades. …”
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  20. 140

    Seasonal Trends in Clouds and Radiation over the Arctic Seas from Satellite Observations during 1982 to 2019 by Xi Wang, Jian Liu, Bingyun Yang, Yansong Bao, George P. Petropoulos, Hui Liu, Bo Hu

    Published 2021-08-01
    “…The spatial distribution of the trends is nearly consistent between the cloud fraction and the surface longwave radiation, except for spring over the Chukchi and Beaufort Seas. We further obtained a significant negative correlation between cloud fraction (surface downwelling/upwelling longwave fluxes) and sea-ice concentration during autumn, which is largest in magnitude for regions with substantial sea ice retreat. …”
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