Hydrography of Marian Cove, King George Island, West Antarctica: implications for ice-proximal sedimentation during summer
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- Hydrography of Marian Cove, King George Island, West Antarctica: implications for ice-proximal sedimentation during summer
- Yoo, Kyu-Cheul
Lee, Min Kyung
Yoon, Ho Il
Kang, Cheon Yoon
- Environmental Sciences & Ecology; Physical Geography; Geology
- Antarctic Peninsula; CTDT; Fjord; Sediment; Water structure; Antarctic; RV Yuzhmorgeologiya
- Issue Date
- Yoo, Kyu-Cheul, et al. 2015. "Hydrography of Marian Cove, King George Island, West Antarctica: implications for ice-proximal sedimentation during summer". Antarctic Science, 27: 185-196.
- During the summer, from 1996-2000, vertical profiles of conductivity, temperature and
transmissivity were obtained near the tidewater glacier of Marian Cove, King George Island, Antarctic
Peninsula. The aims for the study were to determine the short-term variations of water structure due to
hydrographic forcings and to understand sedimentation of suspended particulate matter in Antarctic
fjord environments. Four distinct water layers were identified in the ice-proximal zone of the cove: i) a
surface layer composed of cold and turbid meltwater, ii) a relatively warm Maxwell Bay inflow layer
with characteristics of outer fjord water, iii) a turbid/cold mid-depth layer (40-70 m) originating from
subglacial discharge, and iv) a deep layer comprised of the remnant winter water. The main factor
influencing the characteristics of glacial meltwater layers and driving deposition of suspended particles in
the cove is tidal forcing coupled with wind stress. The relatively small amount of meltwater discharge
in Marian Cove yields low accumulation rates of non-biogenic sedimentary particles in the cove.
The response to north-western and western winds, coupled with flood tide, may promote settling and
sedimentation of suspended particles from turbid layers in the ice-proximal zone of the cove.
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