南极中山锚地与普里兹湾顶地形地貌特征
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摘要
本文使用中山锚地选址测绘资料及考察记录,对中山锚地现代地形地貌特征进行了分析。基于中山站附近海湾海底地形复杂多变,水深变化大的特点,将研究区域主要分为水下岸坡、海底峡谷和台地3个大的地貌单元,且对海底冲刷沟槽、水下低丘、洼地等次一级地貌类型发育进行了分析。同时指出位居台地上的中山锚地发育有裂隙带,此裂隙带横跨台地,长约3.8km,宽约80m,可能会在特定条件下,如地震、冰崩等,形成因海底斜坡失稳而向深海滑塌的地质灾害。
Based on in situ bathymetric data collected during 15th Chinese National Antarctic Research Expedition(1998/1999),the area around Zhongshan Anchorage and top of Prydz Bay is divided into three geomorphologic units as submarine slopes,canyons and terrains.A 3.8 km×80 m fissure is found on the submarine terrain at Zhongshan Anchorage ground,which,once triggered by geological hazards such as earthquakes and ice falls,would be a threaten to the usage and maintenance of the anchorage.
Based on in situ bathymetric data collected during 15th Chinese National Antarctic Research Expedition(1998/1999),the area around Zhongshan Anchorage and top of Prydz Bay is divided into three geomorphologic units as submarine slopes,canyons and terrains.A 3.8 km×80 m fissure is found on the submarine terrain at Zhongshan Anchorage ground,which,once triggered by geological hazards such as earthquakes and ice falls,would be a threaten to the usage and maintenance of the anchorage.
引文
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3冯守珍.南极中山站附近海域水深地形特征.极地研究,2004,16(1):75—79。
4冯守珍,徐承德.中国南极中山锚地勘测.黄渤海海洋,1999,17(4):75—84。
5李栓科.南极东部拉斯曼丘陵区的地貌.地理学报,1995,50(4):368—376。
6Gasparon,Mand Matschullat J.Trace metals in Antarctic ecosystems:Results from the Larsemann Hills,East Antarcti-ca.Applied Geochemistry,2006,21(9):1593—1612.
7Taylor F,McMinn A and Franklin D.Distribution of diatoms in surface sediments of Prydz Bay,Antarctica.Marine Mi-cropaleontology,1997,32(3-4):209—229.
8Stagg HMJ.1985.The structure and origin of Prydz Bay and Mac.Robertson shelf,East Antarctica.Tectonophysics,114:315—340.
9杨友华,王文东.南极中山站地区冰崩概况.南极研究(中文版),8(4):72—75.
10Allison I,Brandt RE and Warren SG.East Antarctic Sea Ice:Albedo,Thickness Distribtuion and SnowCover.Journal of Geophysical Research,1993,98(C7):12417—12429.
11Nunes Vaz R Aand Lennon G W.Physical oceanography of the Prydz Bay region of Antarctic waters.Deep Sea Research Part I:Oceanographic Research Papers,1996,43(5):603—641.
2Harris PTet al.Lithofacies distribution in relation to the geomorphic provinces of Prydz Bay,East Antarctica.Antarctic Science,1998,10(3):227—235.
3冯守珍.南极中山站附近海域水深地形特征.极地研究,2004,16(1):75—79。
4冯守珍,徐承德.中国南极中山锚地勘测.黄渤海海洋,1999,17(4):75—84。
5李栓科.南极东部拉斯曼丘陵区的地貌.地理学报,1995,50(4):368—376。
6Gasparon,Mand Matschullat J.Trace metals in Antarctic ecosystems:Results from the Larsemann Hills,East Antarcti-ca.Applied Geochemistry,2006,21(9):1593—1612.
7Taylor F,McMinn A and Franklin D.Distribution of diatoms in surface sediments of Prydz Bay,Antarctica.Marine Mi-cropaleontology,1997,32(3-4):209—229.
8Stagg HMJ.1985.The structure and origin of Prydz Bay and Mac.Robertson shelf,East Antarctica.Tectonophysics,114:315—340.
9杨友华,王文东.南极中山站地区冰崩概况.南极研究(中文版),8(4):72—75.
10Allison I,Brandt RE and Warren SG.East Antarctic Sea Ice:Albedo,Thickness Distribtuion and SnowCover.Journal of Geophysical Research,1993,98(C7):12417—12429.
11Nunes Vaz R Aand Lennon G W.Physical oceanography of the Prydz Bay region of Antarctic waters.Deep Sea Research Part I:Oceanographic Research Papers,1996,43(5):603—641.
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