کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8884400 | 1626393 | 2018 | 41 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Temporal analysis of water masses and sea ice formation rate west of the Antarctic Peninsula in 2008 estimated from southern elephant seals' SRDL-CTD data
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
CDWWeddell Sea Deep WaterGTsSAMCTDLower Circumpolar Deep WaterWinter waterAABWAISSSM/I - SSM / ICircumpolar Deep Water - آب عمیق آب زیرزمینیSES - آنWater masses - توده های آبSouthern Annular Mode - حالت Annular غربیBellingshausen Sea - دریای BellingshausenAntarctic Peninsula - شبه جزیره قطب جنوبAntarctic Bottom Water - قطب جنوب پایین آبsouthern elephant seal - مهر و موم جنوب فیلGOAL - هدفWis - وای
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
As an alternative method to collect oceanographic data in the polar oceans, especially during winter when traditional methods are very difficult to be used, sea mammals can be tagged with Satellite Relay Data Loggers with CTD capabilities (SRDL-CTD). Using data from nine southern elephant seals (SES; Mirounga leonina) tagged during a field campaign of the MEOP-BR project (the Brazilian Counterpart to the Marine Mammal Exploration of the Oceans Pole to Pole), this work presents a temporal analysis of the water masses and the sea ice formation rate at the western part of the Antarctic Peninsula (AP) during 2008. We found that the seasonal and local processes controlling the surface and intermediate layers of the ocean produced differences in the water mass composition and the sea ice formation rates in our study region. Sea ice formation rates ranged from less than 1â¯cm/day in deep sea waters off the northern part of the AP to 14â¯cm/day at the vicinity of ice shelves such as the Abbot and Wilkins ice shelves, further south in the AP. Maximum sea ice formation rates, as expected, occurred during autumn to winter. After the successive collapse events of the Wilkins Ice Shelf (WIS) in 2008, the sea ice formation rate endured significant reductions even when sea ice concentrations were high in the region. These reductions, observed by SES in the vicinity of WIS can be associated with freshwater input derived from shelf collapses. The presence of the Circumpolar Deep Water (CDW) over the continental shelf west of the AP affected the sea ice formation rate by both contributing to the observed low sea ice coverage and to the acceleration of the ice shelf melting. Another process that demonstrated influence on the formation of sea ice was the advection of more saline waters in the oceanic layer considered here for the application of salt balance equation. This advection resulted in unrealistic sea ice formation rates in regions where there was no sea ice cover. The data and results presented here can be used to feed and to validate climate ocean-atmosphere coupled models. The data can be combined with other (more traditional) meteorological and oceanographic data in order to provide a better understanding of both oceanic and ocean-atmosphere coupled processes yet not very well known in our study region.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Deep Sea Research Part II: Topical Studies in Oceanography - Volume 149, March 2018, Pages 58-69
Journal: Deep Sea Research Part II: Topical Studies in Oceanography - Volume 149, March 2018, Pages 58-69
نویسندگان
Marcelo F. Santini, Ronald B. Souza, Ilana Wainer, Mônica M. Muelbert,