Geomorphology of Horseshoe Island, Marguerite Bay, Antarctica
نویسندگان
چکیده
منابع مشابه
Assessing Drivers of Coastal Primary Production in Northern Marguerite Bay, Antarctica
The coastal ocean of the climatically-sensitive west Antarctic Peninsula is experiencing changes in the physical and (photo)chemical properties that strongly affect the phytoplankton. Consequently, a shift from diatoms, pivotal in the Antarctic food web, to more mobile and smaller flagellates has been observed. We seek to identify the main drivers behind primary production (PP) without any assu...
متن کاملSeasonal and interannual variability in temperature, chlorophyll and macronutrients in northern Marguerite Bay, Antarctica
Biological Time-Series (RaTS) project. When weather and ice permit, the RaTS station is occupied every 5 days in summer and weekly in winter. Observations comprise a conductivity–temperature–depth (CTD) cast to 500m and a water sample from 15m, this being the depth of the chlorophyll maximum in most years. The water samples provide data on total chlorophyll (size-fractionated at 20, 5, 2 and 0....
متن کاملUnderstanding controls on rapid ice-stream retreat during the last deglaciation of Marguerite Bay, Antarctica, using a numerical model
Using a one-dimensional numerical model of ice-stream flow with robust grounding-line dynamics, we explore controls on paleo-ice-stream retreat in Marguerite Bay, Antarctica, during the last deglaciation. Landforms on the continental shelf constrain the numerical model and suggest that retreat was rapid but punctuated by a series of slowdowns. We investigate the sensitivity of ice-stream retrea...
متن کاملInter-annual sea-ice dynamics and micro-algal biomass in winter pack ice of Marguerite Bay, Antarctica
microbial biomass or production processes within the pack ice of the Antarctic extremely rare. The evaluation of their inter-annual variability in the context of ice dynamics and trends in regional climate has not been possible. During the late winters of 2001 (July–August) and 2002 (August–September) we assessed sea-ice dynamics, sea-ice characteristics, and biomass of sea-ice microbiota along...
متن کاملExport and circulation of ice cavity water in Pine Island Bay, West Antarctica
Large sectors of the Antarctic ice sheet are vulnerable to increases in melting at the bases of fringing ice shelves, with melt rates depending on ocean temperatures and circulations in the sub-ice cavities. Here we analyze an oceanographic data set obtained in austral summer 2009 in Pine Island Bay, which is bounded in the east by the calving front of the Amundsen Sea’s fast-moving Pine Island...
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ژورنال
عنوان ژورنال: Journal of Maps
سال: 2019
ISSN: 1744-5647
DOI: 10.1080/17445647.2019.1692700