近20年中国和全球海域海平面上升趋势特征分析及相互关系的初步研究
发布时间：2018-07-22 13:58
【摘要】：利用AVISO高度计数据计算了从1993年1月到2013年1月中国和全球海域海平面的上升趋势并分析了其特点，初步分析了全球海域海平面的上升对中国海的影响。分析显示，在很大程度上中国海海平面的上升是在全球海域海平面上升的大背景下被动上升的。本文的初步结论为： 在研究时段的中国海海域内，中国海平均海平面的上升速率为4.7毫米/年，高于全球同期平均水平；渤海、黄海、东海和南海平均海平面的上升速率依次为3.8、3.4、3.3和5.0毫米/年，其中，渤海、黄海和东海三者平均海平面的上升速率为3.4毫米/年；首次同时计算了中国沿岸、中国海整体及中国海边界海域平均海平面的上升速率，分别为3.7、4.7和4.9毫米/年；中国海边界海域平均海平面的上升速率明显高于中国沿岸海域及渤海、黄海和东海。初步认为：1)渤海、黄海和东海及中国沿岸海域平均海平面的上升速率均与同时期的全球水平相当，仅显略高；而南海对整个中国海平均海平面上升速率的贡献率较大；2)近20年来中国海外围海域海平面的上升可能是中国海整体海域海平面上升的主要因素。 在研究时段的全球海域内，全球海域平均海平面的上升速率为3.0毫米/年，太平洋、印度洋和大西洋平均海平面的上升速率依次是2.6、4.0和2.8毫米/年；印度洋平均海平面的上升速率高于其它大洋和全球海域。同时计算了全球海域、太平洋、印度洋和大西洋海平面空间标准方差的趋势，其在一定程度上反映了空间海平面分布特征的时间变化；太平洋海平面空间标准方差的趋势高于其它大洋及全球海域水平，其次是印度洋，两者均为正值；大西洋海平面空间标准方差的趋势为负值；说明太平洋和印度洋海平面的空间分布越来越不均匀，而大西洋海平面的空间分布逐渐趋于均匀。首次尝试定义上层海水体积中心，在东西方向上，太平洋上层海水体积中心以3.08度/世纪的速度向西运动，印度洋和大西洋上层海水体积中心分别以0.98和0.60度/世纪的速度向东运动；在南北方向上，全球海域、太平洋、印度洋和大西洋上层海水体积中心均以不同的速度向南运动。初步认为：1)全球海域海平面具有不均匀性，，每个海域海平面上升趋势不相同，印度洋平均海平面的上升速率最大；在全球海域内海平面的上升趋势中南半球的上升速率要高于北半球。2)计算空间标准方差的趋势结果显示太平洋和印度洋海平面的空间分布趋于不均匀，而大西洋海平面的空间分布却趋于均匀，揭示了大洋间不同海平面变化的控制机制。3)尝试定义的上层海水体积中心结果显示太平洋和印度洋的上层海水体积中心在东西方向上具有相反的移动趋势，致使西太平洋（暖池附近）海域水体堆积，使周围海域具有较高的上升速率；同时也显示，全球海域及各大洋的上层海水体积中心都向南半球移动，使得南、北半球的水位趋于接近。 可见，中国海海平面主要是在全球海域海平面变化的大背景下变化的，由于太平洋和印度洋上层海水体积中心在东西方向上有着相反的移动趋势，致使西太平洋（暖池附近）海域水体堆积，出现较高的上升速率；西太平洋暖池周围海域与中国南海和东海相通，势必导致中国海外围海域海平面的上升，其中，南海及黑潮源区所受影响最大。初步认为，本文所揭示的太平洋和印度洋海平面的变化特征对整个中国海海平面的上升影响极大，不仅是暖池附近海域海平面极高的上升速率所带来的直接影响，更重要的是太平洋和印度洋海平面整体变化趋势对暖池附近海域海平面上升的间接影响。所以，在监测中国沿海海平面变化的同时，必须监测、研究相邻边界海域乃至全球海平面趋势及其机制。
[Abstract]:The AVISO altimeter data is used to calculate the rising trend of sea level in China and the global sea area from January 1993 to January 2013 and analyze its characteristics. The effect of the rise of sea level in the global sea area on the China Sea is preliminarily analyzed. The analysis shows that the rise of the sea level in China is largely the big back of the sea level rise in the global sea area. The preliminary conclusions of this article are as follows:
The rising rate of the average sea level in the China Sea is 4.7 millimeters per year in the study period, higher than the global average at the same time. The rising rate of the average sea level in Bohai, the Yellow Sea, the East China Sea and the South China Sea is 3.8,3.4,3.3 and 5 mm / year, of which the average sea level rise rate of three persons in Bohai, the Yellow Sea and the East China Sea is 3.4 mm. The rising rates of the average sea level in the China Sea and the China Sea boundary are 3.7,4.7 and 4.9 mm / year, respectively. The rising rate of the average sea level in the sea border area of China is obviously higher than that of the coastal areas of China and Bohai, the Yellow Sea and the East Sea. The initial thought: 1) Bohai, the Yellow Sea and the East China Sea and the Middle East Sea. The rising rate of the average sea level in the coastal waters of the country is equal to the global level in the same period, only slightly higher, while the South China Sea has a great contribution to the average sea level rising rate of the whole China Sea. 2) the rise of the sea level in the offshore waters of China in the last 20 years may be the main factor of the sea level rise in the whole sea area of the China Sea.
The rising rate of the average sea level in the global sea area is 3 mm / year, the average sea level rising rate of the Pacific, India and the Atlantic is 2.6,4.0 and 2.8 mm per year in the global sea area, and the rising rate of the India ocean average sea level is higher than that of the other oceans and the global waters. The standard variance trend of the India ocean and the Atlantic sea level space reflects the temporal variation of the spatial distribution characteristics of the sea level to a certain extent; the standard variance trend of the Pacific sea level space is higher than that of the other oceans and the global sea level, followed by the India ocean, both are positive and the standard variance of the sea level space in the Atlantic. The trend is negative; it shows that the spatial distribution of the sea level in the Pacific and India oceans is becoming more and more uneven, while the spatial distribution of the the Atlantic sea level tends to be uniform. The first attempt to define the upper sea water volume center, in the East and west direction, the central Pacific Ocean volume center is moving westward at 3.08 degrees / century, India ocean and the Atlantic. The upper sea water volume center moves eastward at 0.98 and 0.60 degrees per century, and in the north and south directions, the global sea, the Pacific Ocean, the India ocean and the the Atlantic upper sea volume center are moving southward at different speeds. It is preliminarily considered that 1) the sea level in the global sea area is inhomogeneous, and the sea level rising trend in each sea area is different, The rising rate of the average sea level in the India ocean is the largest; the trend of the rising rate in the south hemisphere is higher than the.2 in the northern hemisphere in the global sea level. The spatial distribution of the Pacific and India ocean levels tends to be uneven, while the spatial distribution of the the Atlantic sea level tends to be uniform. The control mechanism of different sea level changes in the ocean.3) shows that the upper sea volume center of the upper sea water center of the Pacific Ocean and the India ocean shows the opposite direction in the eastern and western direction, resulting in the accumulation of water in the Western Pacific Ocean (near the warm pool), which makes the surrounding sea area have a higher rising rate; It is also shown that the upper sea volume centers of the global seas and oceans move to the southern hemisphere, making the water level of the southern and Northern Hemisphere tend to approach.
It is obvious that the sea level of China is mainly changed in the background of sea level change in the global sea area. Because of the reverse movement trend in the East and west of the Pacific Ocean and the India ocean upper sea volume center, the waters of the Western Pacific (near the warm pool) are accumulated and higher rising rate; the sea area around the Western Pacific warm pool. The connection with the South China Sea and the East China Sea will lead to the rise of the sea level in the offshore areas of China. Among them, the South China Sea and the Kuroshio source area are most affected. It is preliminarily believed that the changes in the sea level of the Pacific and India oceans revealed in this paper have a great impact on the sea level of the whole China Sea, not only the high sea level near the warm pool, but also the high sea level in the warm pool. The direct impact of the rising rate on the sea level in the Pacific and the India ocean is more important for the indirect influence of the sea level rise near the warm pool. Therefore, it is necessary to monitor the coastal sea level changes in the coastal areas and to study the trend and mechanism of the sea level in the adjacent areas and even the global sea level.
【学位授予单位】：中国海洋大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P731.23
[Abstract]:The AVISO altimeter data is used to calculate the rising trend of sea level in China and the global sea area from January 1993 to January 2013 and analyze its characteristics. The effect of the rise of sea level in the global sea area on the China Sea is preliminarily analyzed. The analysis shows that the rise of the sea level in China is largely the big back of the sea level rise in the global sea area. The preliminary conclusions of this article are as follows:
The rising rate of the average sea level in the China Sea is 4.7 millimeters per year in the study period, higher than the global average at the same time. The rising rate of the average sea level in Bohai, the Yellow Sea, the East China Sea and the South China Sea is 3.8,3.4,3.3 and 5 mm / year, of which the average sea level rise rate of three persons in Bohai, the Yellow Sea and the East China Sea is 3.4 mm. The rising rates of the average sea level in the China Sea and the China Sea boundary are 3.7,4.7 and 4.9 mm / year, respectively. The rising rate of the average sea level in the sea border area of China is obviously higher than that of the coastal areas of China and Bohai, the Yellow Sea and the East Sea. The initial thought: 1) Bohai, the Yellow Sea and the East China Sea and the Middle East Sea. The rising rate of the average sea level in the coastal waters of the country is equal to the global level in the same period, only slightly higher, while the South China Sea has a great contribution to the average sea level rising rate of the whole China Sea. 2) the rise of the sea level in the offshore waters of China in the last 20 years may be the main factor of the sea level rise in the whole sea area of the China Sea.
The rising rate of the average sea level in the global sea area is 3 mm / year, the average sea level rising rate of the Pacific, India and the Atlantic is 2.6,4.0 and 2.8 mm per year in the global sea area, and the rising rate of the India ocean average sea level is higher than that of the other oceans and the global waters. The standard variance trend of the India ocean and the Atlantic sea level space reflects the temporal variation of the spatial distribution characteristics of the sea level to a certain extent; the standard variance trend of the Pacific sea level space is higher than that of the other oceans and the global sea level, followed by the India ocean, both are positive and the standard variance of the sea level space in the Atlantic. The trend is negative; it shows that the spatial distribution of the sea level in the Pacific and India oceans is becoming more and more uneven, while the spatial distribution of the the Atlantic sea level tends to be uniform. The first attempt to define the upper sea water volume center, in the East and west direction, the central Pacific Ocean volume center is moving westward at 3.08 degrees / century, India ocean and the Atlantic. The upper sea water volume center moves eastward at 0.98 and 0.60 degrees per century, and in the north and south directions, the global sea, the Pacific Ocean, the India ocean and the the Atlantic upper sea volume center are moving southward at different speeds. It is preliminarily considered that 1) the sea level in the global sea area is inhomogeneous, and the sea level rising trend in each sea area is different, The rising rate of the average sea level in the India ocean is the largest; the trend of the rising rate in the south hemisphere is higher than the.2 in the northern hemisphere in the global sea level. The spatial distribution of the Pacific and India ocean levels tends to be uneven, while the spatial distribution of the the Atlantic sea level tends to be uniform. The control mechanism of different sea level changes in the ocean.3) shows that the upper sea volume center of the upper sea water center of the Pacific Ocean and the India ocean shows the opposite direction in the eastern and western direction, resulting in the accumulation of water in the Western Pacific Ocean (near the warm pool), which makes the surrounding sea area have a higher rising rate; It is also shown that the upper sea volume centers of the global seas and oceans move to the southern hemisphere, making the water level of the southern and Northern Hemisphere tend to approach.
It is obvious that the sea level of China is mainly changed in the background of sea level change in the global sea area. Because of the reverse movement trend in the East and west of the Pacific Ocean and the India ocean upper sea volume center, the waters of the Western Pacific (near the warm pool) are accumulated and higher rising rate; the sea area around the Western Pacific warm pool. The connection with the South China Sea and the East China Sea will lead to the rise of the sea level in the offshore areas of China. Among them, the South China Sea and the Kuroshio source area are most affected. It is preliminarily believed that the changes in the sea level of the Pacific and India oceans revealed in this paper have a great impact on the sea level of the whole China Sea, not only the high sea level near the warm pool, but also the high sea level in the warm pool. The direct impact of the rising rate on the sea level in the Pacific and the India ocean is more important for the indirect influence of the sea level rise near the warm pool. Therefore, it is necessary to monitor the coastal sea level changes in the coastal areas and to study the trend and mechanism of the sea level in the adjacent areas and even the global sea level.
【学位授予单位】：中国海洋大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P731.23
【参考文献】
相关期刊论文 前10条
1 董晓军,黄s
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