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南海西沙海域甘泉海台的阶梯状地形 被引量:2
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作者 张江勇 黄文星 +1 位作者 刘胜旋 姜大朋 《热带地理》 2016年第1期10-18,共9页
通过多波束水深资料,研究了南海西沙海域甘泉海台地形特征。甘泉海台顶面平坦,坡度通常〈1°,但存在3级阶梯状地形,水深范围介于550-700 m,这3级阶梯状地形总体向南西倾斜。在600-850 m水深范围内,甘泉海台普遍发育水下阶地,识别出... 通过多波束水深资料,研究了南海西沙海域甘泉海台地形特征。甘泉海台顶面平坦,坡度通常〈1°,但存在3级阶梯状地形,水深范围介于550-700 m,这3级阶梯状地形总体向南西倾斜。在600-850 m水深范围内,甘泉海台普遍发育水下阶地,识别出的水下阶地多达5级,其中西侧阶地发育程度优于东侧。初步认为:甘泉海台顶部和周缘阶梯状地形是冰期―间冰期旋回尺度上全球海平面变化和南海地壳沉降共同作用的结果,这2个因素可能也控制着南海其他珊瑚礁的发育演化。在850-1 300 m水深范围内,甘泉海台周缘存在倒石堆状地形,推测主要是珊瑚礁碎屑从礁顶搬运沉积的产物,甘泉海台西北侧比东南侧倒石堆地形更加发育的现象估计与甘泉海台顶面向南西倾斜直接相关。 展开更多
关键词 珊瑚礁 阶梯状地形 甘泉海台 南海西沙海域 海平面变化 地壳沉降
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Report of epibenthic macrofauna found from Haima cold seeps and adjacent deep-sea habitats,South China Sea 被引量:4
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作者 Dong Dong Xinzheng Li +7 位作者 Mei Yang Lin Gong Yang Li Jixing Sui Zhibin Gan Qi Kou Ning Xiao Junlong Zhang 《Marine Life Science & Technology》 2021年第1期1-12,共12页
This work reports on a preliminary taxonomic study of epibenthic macroinvertebrates collected or observed by underwater video at the Haima cold seeps and in adjacent deep-sea habitats,including a mud volcano feld and ... This work reports on a preliminary taxonomic study of epibenthic macroinvertebrates collected or observed by underwater video at the Haima cold seeps and in adjacent deep-sea habitats,including a mud volcano feld and Ganquan Plateau,during an expedition in the South China Sea by the Chinese-manned submersible Shenhai Yongshi in May 2018.A total of 41 species belonging to 6 phyla were identifed,among which 34 species were collected from the Haima cold seeps.Mollusks and crustaceans that are specialized in reducing habitats were predominant in biotopes of the Haima cold seeps,whereas sponges and cold-water corals and their commensals were prominent in communities of the mud volcano feld and the slopes of Ganquan Plateau.The distribution and faunal composition of each taxonomic group are discussed. 展开更多
关键词 Cold seep Mud volcano ganquan plateau Epibenthic macroinvertebrates Faunal composition South China Sea
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