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The Ice-breaker R.V. ARAON Expedition: Unveiling hidden history of the western Arctic Ocean

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Title
The Ice-breaker R.V. ARAON Expedition: Unveiling hidden history of the western Arctic Ocean
Other Titles
쇄빙선 아라온을 이용한 서북극해 환경변화 역사 복원 연구
Authors
Han, Duk Ki
Ji, Hyosun
Kim, Hyung J.
Son, Yeong-Ju
Lee, Mi Jung
Kim, So-Young
Issue Date
2012
Citation
Han, Duk Ki, et al. 2012. The Ice-breaker R.V. ARAON Expedition: Unveiling hidden history of the western Arctic Ocean. 한국해양학회. 한국해양학회. 2012.06.01~.
Abstract
Research expeditions to the western Arctic Ocean have been carried out by the Korean Icebreaker 「ARAON」in 2010 and 2011. The main goal of this marine geological research is to reconstruct glacial history and palaeoceanographic changes (sea-ice coverage, brine formation, palaeoproductivity, origin of organic matters) in the western Arctic Ocean during the late Quaternary glacial-interglacial cycles. One focus was to gather sedimentary materials and therefore establish chronostratigraphy of the sediments across the Chukchi shelf and the southern Mendeleev Ridge. The shipboard echosounder systems (Multi-beam Bathymetry and Sub-bottom Profiling) were continuously operated during the entire expedition to decide suitable coring sites based on a high-resolution seismic profiles for the uppermost sediment sections. Box, multiple and gravity cores were retrieved with the ARAON coring system. Directly after retrieval, the cores were divided into 150cm sections and brought to the sedimentology lab onboard for core curation (e.g. photography, description, photospectrometry, subsampling). Here we present preliminary results obtained from multi-proxy analyses of onshore laboratory as well as the onboard analyses conducted on the sediment core samples retrieved during the ARAON expeditions. (sea-ice coverage, brine formation, palaeoproductivity, origin of organic matters) in the western Arctic Ocean during the late Quaternary glacial-interglacial cycles. One focus was to gather sedimentary materials and therefore establish chronostratigraphy of the sediments across the Chukchi shelf and the southern Mendeleev Ridge. The shipboard echosounder systems (Multi-beam Bathymetry and Sub-bottom Profiling) were continuously operated during the entire expedition to decide suitable coring sites based on a high-resolution seismic profiles for the uppermost sediment sections. Box, multiple and gravity cores were retrieved with the ARAON coring system.
URI
http://repository.kopri.re.kr/handle/201206/8218
Conference Name
한국해양학회
Conference Place
한국해양학회
Conference Date
2012.06.01~
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