کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8884394 | 1626393 | 2018 | 50 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Iceberg drift and ocean circulation in the northwestern Weddell Sea, Antarctica
ترجمه فارسی عنوان
رانش یخی و گردش اقیانوس در دریای شمال غرب دریای جنوبی، قطب
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی
چکیده انگلیسی
Icebergs are distinctive features in the Southern Ocean and can influence the physicochemical properties of the ocean environment around them. Their trajectories are influenced by ocean currents, sea ice, bathymetry and wind action. Here, twenty-five icebergs were identified and tracked by applying image classification methods to a series of 142 Advanced Synthetic Aperture Radar (ASAR) images obtained during 2008 and 2009. Tracking these icebergs made it possible to associate the patterns of iceberg drift with the main ocean currents and front systems in this region, including the Antarctic Coastal Current, the Antarctic Slope Front and the Weddell Front. A case study investigated here revealed the recirculation of a Weddell Sea iceberg within the Bransfield Strait in the Northern Antarctic Peninsula as well as its corresponding mass loss starting in the Weddell Sea and extending throughout the monitoring period. The icebergs studied experienced an average disintegration percentage of 21.15% and an average drift speed of 0.22 ± 0.11â¯kmâ¯h-1. The icebergs that drifted at least 500â¯km had an average meltwater injection rate of 62.76 ± 38.27â¯m3 s-1 in the ocean around the Northern Antarctic Peninsula.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Deep Sea Research Part II: Topical Studies in Oceanography - Volume 149, March 2018, Pages 10-24
Journal: Deep Sea Research Part II: Topical Studies in Oceanography - Volume 149, March 2018, Pages 10-24
نویسندگان
Lorena L. Collares, Mauricio M. Mata, Rodrigo Kerr, Jorge Arigony-Neto, Mauro M. Barbat,