A geomorphological seabed classification for the Weddell Sea, Antarctica
A geomorphological seabed classification for the Weddell Sea, Antarctica
复制标题
南极洲威德尔海的地貌海底分类
DOI:
10.1007/s11001-015-9256-x
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发表时间:
2016
影响因子:
1.4
通讯作者:
Dorschel
中科院分区:
文献类型:
--
作者:
Jerosch;Krajnik;Scharf;Dorschel
Sea floor morphology plays an important role in many scientific disciplines such as ecology, hydrology and sedimentology since geomorphic features can act as physical controls for e.g. species distribution, oceanographically flow-path estimations or sedimentation processes. In this study, we provide a terrain analysis of the Weddell Sea based on the 500 m × 500 m resolution bathymetry data provided by the mapping project IBCSO. Seventeen seabed classes are recognized at the sea floor based on a fine and broad scale Benthic Positioning Index calculation highlighting the diversity of the glacially carved shelf. Beside the morphology, slope, aspect, terrain rugosity and hillshade were calculated and supplied to the data archive PANGAEA. Applying zonal statistics to the geomorphic features identified unambiguously the shelf edge of the Weddell Sea with a width of 45–70 km and a mean depth of about 1200 m ranging from 270 m to 4300 m. A complex morphology of troughs, flat ridges, pinnacles, steep slopes, seamounts, outcrops, and narrow ridges, structures with approx. 5–7 km width, build an approx. 40–70 km long swath along the shelf edge. The study shows where scarps and depressions control the connection between shelf and abyssal and where high and low declination within the scarps e.g. occur. For evaluation purpose, 428 grain size samples were added to the seabed class map. The mean values of mud, sand and gravel of those samples falling into a single seabed class was calculated, respectively, and assigned to a sediment texture class according to a common sediment classification scheme.
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DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
M. Dolan;P. Buhl;T. Thorsnes;L. Buhl‐Mortensen;V. Bellec;R. Bøe
通讯作者:
R. Bøe
影响因子:
2.9
作者:
G. Kuhn;M. Weber
通讯作者:
M. Weber
影响因子:
3.7
作者:
Douglass LL;Turner J;Grantham HS;Kaiser S;Constable A;Nicoll R;Raymond B;Post A;Brandt A;Beaver D
通讯作者:
Beaver D
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
J. Arndt;B. Dorschel;M. Jakobsson;F. Nitsche;E. Gowland;Bruce R. Goleby;M. Rebesco;F. Bohoyo;J. Hong;J. Black;R. Greku;G. Udintsev;Felipe Barrios;W. Reynoso;Morishita Taisei;R. Wigley
通讯作者:
R. Wigley
DOI:
--
发表时间:
2000
期刊:
OCEANS 2000 MTS/IEEE Conference and Exhibition. Conference Proceedings (Cat. No.00CH37158)
影响因子:
--
作者:
A. R. Wilbur
通讯作者:
A. R. Wilbur