| 基于全球板块运动模型分析大西洋扩张变化 |
| |
| 引用本文： | 金双根,朱文耀.基于全球板块运动模型分析大西洋扩张变化[J].测绘科学,2002,27(1):31-35. |
| |
| 作者姓名： | 金双根 朱文耀 |
| |
| 作者单位： | 中国科学院上海天文台,上海,200030 |
| |
| 基金项目： | 国家攀登计划，国家研究发展基金，上海市科技发展基金，970231003，G1998040703，JC14012，，， |
| |
| 摘 要： | 基于现代空间测量技术SLR、VLBI和GPS实测资料，解算出大西洋中脊海底扩张速率，其中北大西洋的东西向扩张速率平均为35mm/a，赤道大西洋东西向扩张速度分别为20－25mm/a，南大西洋东西向扩张速率为22－28mm/a，证实全球板块运动的存在及大西洋扩张学说，并基于全球几百万年地质模型NNR－NUVEL1A，北大西洋的东西向扩张速率平均为24．3mm/a，基于最新全球板块运动模型ITRF2000VEL，北大西洋的东西向扩张速率平均为20．8mm/a，总体上大西洋实测东西扩张速度与根据地学资料推出的地球板块运动模型和最新ITRF2000VEL模型的结果基本一致。
|
| 关 键 词： | 板块运动 模型 大西洋扩张 大陆漂移 ITRF |
| 文章编号： | 1009-2307(2002)0001-31-05 |
| 修稿时间： | 2001年10月19日 |
Analysing the Extending of Atlantic Based on Global Plate Motion Models |
| |
| JIN Shuang-gen,ZHU Wen-yao.Analysing the Extending of Atlantic Based on Global Plate Motion Models[J].Science of Surveying and Mapping,2002,27(1):31-35. |
| |
| Authors: | JIN Shuang-gen ZHU Wen-yao |
| |
| Abstract: | The horizontal extending rates of the north ,equator and south Atlantic ridge are about 35mm/a?20~25mm/a?22~28mm/a at east-west direction ,respectively ,based on the space geodetic data collected by highly sophisticated techniques such as VLBI, SLR, GPS and DORIS, which shows that the global plate is moving and testifies the LysenKoism continental drift. In this paper, a new present-day global plate motion ITRF2000VEL is determined on the basis of space geodetic data, incorporating the ITRF2000 velocity field that was free of any additional tectonic plate model assumption and was published in 2000 by IERS. The horizontal extending rates of the north Atlantic is 24.3mm/a based on NNR-NUVEL1A and 20.8 mm/a based on the newest model of the ITRF2000, the results are almost consistent based on the two models in the whole. |
| |
| Keywords: | continental drift plate motion ITRF Atlantic extension |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
