摘要
根据1987，1988，1990年在东北赤道太平洋CC区（134°－157°W）的3个航次多金属结核调查资料的统计分析；结果表明，CC区自西向东，从北向南，多金属结核丰度、覆盖率、形态、粒径和化学组分等具明显的区域性分布规律。但在这一区域性分布背景上，结核的局部分布很复杂。区中海水的生物生产力、区域地质构造与火山活动、南极底层水（流）、水深、海底地形、海底沉积特征等地质地理环境因素的区域性规律也很明显，并直接控制了本区多金属结核的区域性分布。地形、底层流、沉积速率等的局部变化是结核分布局部变化的主要控制因素，由于这些因素的复杂多变，也造成了结核局部分布的复杂化。
Manganese nodule data collected by the State Oceanic Adiministration in 1987, 1988, 1990 by the R/V 'Xiang Yang Hong 16' were used to study the regional distribution patterns and local variation features of nodules in the Clarion-Clipperton Zone (CC Zone) (134°-157°W), and to analyze the geologic and geographic environmental factors and their variation trends in this area. The control of environmental factors on nodule distribution is discussed.The study showed obvious W-E and N-S distribution patterns of nodule abun-dance, coverage, morphology, size and chemical composition in the CC Zone where the regional geologic and geographic environment variations of biologic Productivity,antarctic bottom water (AABW), regional geological tectonics and volcanic activity,water depth, seafloor topography, sediments and sedimentation rate, etc, obviously control the regional-scale nodule distribution here.The complicated local-scale nodule variation is mainly controlled by the complex local variation of seafloor topography, AABW, sedimentation rate, etc.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1996年第4期405-413,共9页
Oceanologia Et Limnologia Sinica
基金
国家海洋局太平洋多金属结核资源调查项目!(84)582
关键词
太平洋
多金属结核
分布
地理环境因素
地质环境
CC zone Manganese nodule distribution Geologic and geographic environment factors
