联合卫星测高、GRACE与温盐数据分析红海海平面变化季节性特征

doi:10.11947/j.AGCS.2019.20190034

测绘学报 ›› 2019, Vol. 48 ›› Issue (9): 1119-1128.doi: 10.11947/j.AGCS.2019.20190034

联合卫星测高、GRACE与温盐数据分析红海海平面变化季节性特征

赵鸿彬^1,3, 谷延超², 范东明¹, 邱春洪^1,4, 宿春鹏¹, 方伟浩¹

1. 西南交通大学地球科学与环境工程学院, 四川成都 611756;
2. 西南石油大学土木工程与建筑学院, 四川成都 610500;
3. 广州市市政工程试验检测有限公司, 广东广州 510520;
4. 中铁二院工程集团有限责任公司, 四川成都 610031

收稿日期:2019-01-21 修回日期:2019-03-19 出版日期:2019-09-20 发布日期:2019-09-25
通讯作者: 谷延超 E-mail:yanchaogu@163.com
作者简介:赵鸿彬(1994-),男,硕士生,研究方向为卫星大地测量。
基金资助:
国家自然科学基金（41574018）；西南石油大学青年教师过学术关（201899010158）

Seasonal sea level variations in the Red Sea inferred from satellite altimetry, GRACE and temperature and salinity data

ZHAO Hongbin^1,3, GU Yanchao², FAN Dongming¹, QIU Chunhong^1,4, SU Chunpeng¹, FANG Weihao¹

1. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China;
2. School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu 610500, China;
3. Guangzhou Municipal Engineering Testing Co. Ltd., Guangzhou 510520, China;
4. China Railway Eryuan Engineering Group Co. Ltd., Chengdu 610031, China

Received:2019-01-21 Revised:2019-03-19 Online:2019-09-20 Published:2019-09-25
Supported by:
The National Natural Science Foundation of China(No. 41574018);Young Scholars Development Fund of SWPU(No. 201899010158)

摘要/Abstract

摘要： 本文利用卫星测高、GRACE与温盐数据监测2003-2014年红海海平面变化，并分析了蒸发降水以及亚丁湾-红海质量交换对红海质量变化的影响。红海地区单一的温盐数据存在覆盖不全或质量不佳的问题，综合CORA、SODA与ORAS4温盐数据估算结果得到平均比容海平面变化，以改善比容信号的精度。针对GRACE数据处理过程中截断与空间平滑滤波引起的泄漏误差，提出改进尺度因子纠正泄漏误差，利用卫星测高数据进行模拟实验验证了改进尺度因子的有效性。利用传统尺度因子和改进尺度因子反演的红海质量变化周年振幅分别为16.1±1.3 cm和20.5±1.7 cm，利用卫星测高和温盐数据估算的质量变化周年振幅为20.2±1.0 cm，表明改进尺度因子可有效减小泄漏误差的影响，改善GRACE模型反演红海质量变化的精度。卫星测高、GRACE卫星重力数据以及平均温盐数据具有较好的一致性，联合GRACE和温盐数据估算的红海综合海平面变化周年振幅为16.6±1.7 cm，与卫星测高估算的总海平面变化周年振幅（16.2±0.9 cm）基本一致，表明多源数据可构成完整的红海海平面监测手段。相比于降水-蒸发作用，红海质量变化受红海与亚丁湾的海水质量交换的影响更为显著，其主导了红海质量的季节性变化。

关键词: 红海, GRACE, 卫星测高, 温盐数据, 海平面变化, 改进尺度因子

Abstract: Satellite altimetry, GRACE and temperature-salinity datas are used to analyze the sea level variations in the Red Sea over the period from 2003 to 2014, and we explore the precipitation-evaporation effect and the water exchange between the Gulf of Aden and the Red Sea on local sea level variations. Due to the poor coverage and imperfection for single temperature-salinity dataset, we averaged three datasets (CORA, SODA, and ORAS4) to improve the accuracy of the steric sea level variations. In order to correct the leakage errors induced by truncation and spatial smoothing during GRACE postprocessing, we proposed an improved scale factor, which is validated by using satellite altimeter measurements. Annual amplitudes of mass-induced sea level variations observed by GRACE measurements for traditional and improved scale factor are 16.1±1.3 and 20.5±1.7 cm, respectively, and that inferred from satellite altimetry and temperature-salinity data is 20.2±1.0 cm, indicating that the improved scale factor can restore the leaked signals effectively. Results demonstrate good agreement among the satellite altimetry, GRACE and temperature-salinity data. Annual amplitude of the total sea level variations combining the GRACE mass-induced and temperature-salinity steric sea level variations is 16.6±1.7 cm, which is consistent with satellite altimeter results (16.2±0.9 cm), implying that closed-loop verification can be established among the different sea level measurements in the Red Sea. Mass exchange with the Gulf of Aden through the Bab-el-Mandeb strait has an obvious effect on the mass variations in the Red Sea, which dominates the seasonal signals of mass variations in the Red Sea.

Key words: Red Sea, GRACE, satellite altimetry, temperature and salinity data, sea level variations, improved scale factor

中图分类号:

P223

赵鸿彬, 谷延超, 范东明, 邱春洪, 宿春鹏, 方伟浩. 联合卫星测高、GRACE与温盐数据分析红海海平面变化季节性特征[J]. 测绘学报, 2019, 48(9): 1119-1128.

ZHAO Hongbin, GU Yanchao, FAN Dongming, QIU Chunhong, SU Chunpeng, FANG Weihao. Seasonal sea level variations in the Red Sea inferred from satellite altimetry, GRACE and temperature and salinity data[J]. Acta Geodaetica et Cartographica Sinica, 2019, 48(9): 1119-1128.

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联合卫星测高、GRACE与温盐数据分析红海海平面变化季节性特征

Seasonal sea level variations in the Red Sea inferred from satellite altimetry, GRACE and temperature and salinity data

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