极地研究

极地研究 ›› 2015, Vol. 27 ›› Issue (4): 421-428.DOI: 10.13679/j.jdyj.2015.4.421

• 研究论文 • 上一篇    下一篇

普里兹湾陆架表层沉积物粒度特征及其环境指示意义

王豪壮 陈志华 王春娟 刘合林 赵仁杰 唐正 黄元辉   

  1. 国家海洋局第一海洋研究所，山东 青岛 266061
  • 收稿日期:2014-10-22 修回日期:2015-01-22 出版日期:2015-12-30 发布日期:2015-12-30
  • 通讯作者: 王豪壮

CHARACTERISTICS OF GRAIN SIZE IN SURFACE SEDIMENTS FROM THE CONTINENTAL SHELF, PRYDZ BAY, AND IMPLICATIONS FOR SEDIMENTARY ENVIRONMENT

Wang Haozhuang, Chen Zhihua,  Wang Chunjuan,  Liu Helin,  Zhao Renjie, Tang Zheng, Huang Yuanhui   

  1. Fist Institute of Oceanography, SOA, Qingdao 266061, China
  • Received:2014-10-22 Revised:2015-01-22 Online:2015-12-30 Published:2015-12-30

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摘要： 本文使用中国第24次和29次南极科考获得的南大洋地区普里兹湾海域陆架表层沉积物，通过粒度分析探讨研究区内影响沉积作用的主要因素。研究区内沉积物类型有：砾（G），泥质砂质砾(msG)，砾质泥(gM)，砾质泥质砂(gmS)，含砾泥((g)M)，含砾泥质砂（(g)mS），砂(S)，砂质粉砂（sZ），粉砂（Z）九种。依据沉积物类型及区域地形变化，将研究区域划分为东部含砾泥质沉积区和西部含砾砂质沉积区。在东部含砾泥质物沉积区内，南极沿岸流是影响四夫人浅滩和Svenner水道处沉积作用的主要因素，在普里兹水道和埃默里海盆处，沉积作用主要受到湾内普里兹湾流涡影响。在西部含砾砂质沉积区内的弗拉姆浅滩和埃默里冰架前缘，沉积作用受冰山影响更大，海流影响相对较弱。

关键词: 普里兹湾, 表层沉积物, 粒度特征, 环境指示意义

Abstract: Through analyzing the grain size characteristic of continental shelf surface sediments obtained during Chinese 24th and 29th South Pole Exploration in Prydz Bay，Southern Ocean to discuss the main factors influence sedimentation. The surface sediments are divided into nine types: G, msG, gM, gmS, (g)M, (g)mS, S, sZ, Z. The study area can be divided into two sections by sediment types and topography of the bay: gravelly mud section in east and gravelly sand section in west. In the eastern gravelly mud section, coastal current dominates sedimentation processes in Four Ladies Bank and Svenner Channel. In Prydz Channel and Amery Basin, Prydz Bay Gyre is the dominant factor controlling sedimentary processes. In contrast, icebergs are the primary factors influence sedimentation in front of Amery Ice Shelf and Fram Bank, while the influencing of current is weak.

Key words: Prydz Bay, surface sediment, grain size characteristic, environmental implication