| 摘要: |
| 文章采用GPS-RTK技术进行2016年金山三岛滩涂水下地形测量，绘制金山三岛滩涂水下地形云图，并与2014年和2015年滩涂水下地形测量结果进行对比，得出以下结论:金山三岛连线左右1 km之内的地形起伏变化大，小金山岛南北侧各有一条深坑，大小金山岛之间有一条贯穿东西向的深槽，它的形成与涨落潮流不一致以及人为活动有关，大金山岛与浮山岛之间有一类似山脊样的地形，浮山岛南侧也有一深坑存在。近3年金山三岛滩涂水下地形变化不大，局部小范围内有淤积和冲刷。定期对三岛滩涂水下地形进行测量可以掌握其变化规律，为管理部门提供管理基础资料。 |
| 关键词: 金山三岛 水下地形 测量 GPS-RTK 演变浅析 |
| DOI： |
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| 基金项目: |
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| Evolution of the Underwater Topography of the Three Islands in Jinshan |
| WANG Wansheng |
| Jinshan Ocean and Coast Management Institute |
| Abstract: |
| GPS-RTK technology was used to measure the underwater topography of three islands of Jinshan district in 2016.Underwater topography cloud chart was drawn and compared with the results of underwater topographic survey in 2014 and 2015.The results showed that the terrain has big change in the line within a kilometer of three islands.There is a pit in the north and south side of Small Jinshan Island and an EW direction deep trough between the Big and Small Island,whose formation is inconsistent with the ebb and flow and human activities.The terrain between Big Island and Fushan Island is like a mountain ridge.There is also a pit located in the south of Fushan Island.In the past three years,the underwater topography of three islands of Jinshan district has changed little,and there are deposition and erosion in partial small area.Measuring the underwater topography of three islands of Jinshan district regularly can help master the law of change,and provide basic information for management. |
| Key words: Three islands of Jinshan district,Underwater topography,Measure,GPS RTK,Evolution analysis |
