泰国湾底质沉积物输运趋势
发布时间：2018-07-25 12:10
【摘要】：基于对泰国湾164个表层沉积物样品的粒度分析测试结果,使用Gao-Collins沉积物粒径趋势分析方法,研究了泰国湾底质沉积物的分布特征和输运趋势。研究区内的沉积物主要为粉砂、砂质粉砂和粉砂质砂,分选差,分选系数变化范围为1.3~2.9,平均值为1.8,偏度变化范围为-1.8~2.5,平均值为1.2。根据沉积物粒度趋势特征,研究区分为1区、2区和3区3个区域,其中1区的平均分选系数和偏度分别为1.73、0.91;2区沉积物分选系数和偏度分别为1.81和1.33;3区沉积物分选系数和偏度分别为1.91和1.24。1区和2区河口附近广泛分布粉砂和泥等细粒级沉积物(平均粒径为6.5Ф);而1区与2区交界处和3区的近岸区域沉积物主要为粉砂质砂(平均粒径为5.5Ф)。研究区北部、中部和西南部近岸沉积物相比研究区其他地区,分选更差一些。泰国湾沉积物运移受河流、洋流和季风的共同影响,其中1区受控因素为泰国湾湾口的河流,运移方向为从河口向外;洋流是2区南部沉积物的主要运移动力,运移方向为从外围向湾中心;沿岸流是3区沉积物的主要运移动力,使3区沉积物的运移方向为离岸方向。在河流和洋流共同作用下,泰国湾沉积物有向苏梅岛附近运移的趋势。
[Abstract]:Based on the results of particle size analysis of 164 surface sediment samples in the Gulf of Thailand, the distribution characteristics and transport trends of sediment in the Gulf of Thailand were studied by using the method of Gao-Collins particle size trend analysis. The sediment in the study area is mainly silty sand, silty sand and silty sand, with poor sorting, the range of separation coefficient is 1.3m2.9. the average value is 1.8. the variation range of deviation is -1.80.5.The average value is 1.2. According to the grain size trend characteristics of the sediments, the study was divided into 3 regions: 1, 2 and 3. The average separation coefficient and deviation of sediment in area 1 were 1.73 / 0.91 and 1.81, respectively, and the deviation of sediment in area 1.3393 were 1.91, 1.24.1 and 1.24.1, respectively. The fine silt and mud were widely distributed near the estuary of area 2. The grain-grade sediment (average diameter is 6.5), while the silty sand is the main sediment in the coastal area at the junction of area 1 and region 2 and in area 3 (the average particle size is 5.5). The near shore sediments in the north, middle and southwest of the study area are worse than other areas in the study area. Sediment transport in the Gulf of Thailand is affected by rivers, ocean currents and monsoons. The controlled factors in area 1 are the rivers at the mouth of the Gulf of Thailand, and the direction of transport is from the estuary to the outside, and the ocean current is the main transport power of the sediments in the southern part of area 2. The direction of migration is from the periphery to the center of the bay, and the coastal current is the main transport power of the sediments in the three zones, which makes the direction of the sediment migration in the three zones offshore. Under the interaction of rivers and ocean currents, the sediments of the Gulf of Thailand tend to migrate to the vicinity of Koh Mui Island.
【作者单位】： 国家海洋局第一海洋研究所;海洋沉积与环境地质国家海洋局重点实验室;青岛海洋科学与技术国家实验室海洋地质过程与环境功能实验室;海洋与海岸资源研究中心海洋和海岸资源室;泰国普吉海洋生物中心;
【基金】：全球变化与海气相互作用专项(GASI-02-SCS-CJ03,GASI-GEOGE-03) 青岛海洋科学与技术国家实验室鳌山科技创新计划项目(2015ASKJ03) 东南亚海岸带脆弱性合作调查研究
【分类号】：P736.21
[Abstract]:Based on the results of particle size analysis of 164 surface sediment samples in the Gulf of Thailand, the distribution characteristics and transport trends of sediment in the Gulf of Thailand were studied by using the method of Gao-Collins particle size trend analysis. The sediment in the study area is mainly silty sand, silty sand and silty sand, with poor sorting, the range of separation coefficient is 1.3m2.9. the average value is 1.8. the variation range of deviation is -1.80.5.The average value is 1.2. According to the grain size trend characteristics of the sediments, the study was divided into 3 regions: 1, 2 and 3. The average separation coefficient and deviation of sediment in area 1 were 1.73 / 0.91 and 1.81, respectively, and the deviation of sediment in area 1.3393 were 1.91, 1.24.1 and 1.24.1, respectively. The fine silt and mud were widely distributed near the estuary of area 2. The grain-grade sediment (average diameter is 6.5), while the silty sand is the main sediment in the coastal area at the junction of area 1 and region 2 and in area 3 (the average particle size is 5.5). The near shore sediments in the north, middle and southwest of the study area are worse than other areas in the study area. Sediment transport in the Gulf of Thailand is affected by rivers, ocean currents and monsoons. The controlled factors in area 1 are the rivers at the mouth of the Gulf of Thailand, and the direction of transport is from the estuary to the outside, and the ocean current is the main transport power of the sediments in the southern part of area 2. The direction of migration is from the periphery to the center of the bay, and the coastal current is the main transport power of the sediments in the three zones, which makes the direction of the sediment migration in the three zones offshore. Under the interaction of rivers and ocean currents, the sediments of the Gulf of Thailand tend to migrate to the vicinity of Koh Mui Island.
【作者单位】： 国家海洋局第一海洋研究所;海洋沉积与环境地质国家海洋局重点实验室;青岛海洋科学与技术国家实验室海洋地质过程与环境功能实验室;海洋与海岸资源研究中心海洋和海岸资源室;泰国普吉海洋生物中心;
【基金】：全球变化与海气相互作用专项(GASI-02-SCS-CJ03,GASI-GEOGE-03) 青岛海洋科学与技术国家实验室鳌山科技创新计划项目(2015ASKJ03) 东南亚海岸带脆弱性合作调查研究
【分类号】：P736.21
【参考文献】
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