Ocean Temperature and Salinity Distributions Inverted from Combined Reflection Seismic and XBT Data
Ocean Temperature and Salinity Distributions Inverted from Combined Reflection Seismic and XBT Data
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DOI：
10.1002/cjg2.1613
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发表时间：
2011-05
期刊：
影响因子：
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通讯作者：
Xinghui Huang;Haibin Song;M. Luis;Yang Bai
中科院分区：
文献类型：
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作者：
Xinghui Huang;Haibin Song;M. Luis;Yang Bai
地震海洋学作为一种新的海洋勘探方法，已被广泛应用于探测多种海洋特征。利用地震数据反演海水的温盐分布是地震海洋学研究的一个重要方向.我们分析了在欧洲GO项目范围内采集的一条多道地震（MCS）测线（测线GOLR-12）的低频地震数据，以及同时采集的位于伊比利亚半岛西南部的XBT（可扩展的海底温度记录仪）和CTD（电导率-温度-深度）数据。利用叠后约束波阻抗反演方法反演了海水的温度和盐度分布，结果表明，该方法确实能够沿着测线每隔6.25m提供一条可靠的温度和盐度分布剖面，温度分辨率为0.16°C。该方法适用于高质量的MCS数据，可以为海洋学研究提供高横向分辨率的温度和盐度剖面，仅使用少量的海洋学测量数据来约束反演过程。
Seismic oceanography has been widely used to detect many kinds of oceanographic features as a new oceanographic prospecting method. Inversion for temperature and salinity distributions from seismic data is a very important research field in seismic oceanography. We analyzed low frequency seismic data from one multichannel seismic (MCS) line acquired in the scope of the European GO Project (line GOLR-12) combined with the simultaneously acquired XBT (eXpendable BathyThermograph) and CTD (Conductivity-Temperature-Depth) data, which are located to the southwest of the Iberian Peninsula. We used a post-stack constrained impedance inversion method to derive temperature and salinity distributions of sea water and the result demonstrated that this method can indeed provide reliable temperature and salinity distribution profiles every 6.25m along the seismic line, with the temperature resolutions of 0.16°C. This method applied to good quality MCS data can provide high lateral-resolution temperature and salinity profiles for oceanographic research, using only a few oceanographic measurements to constrain the inversion procedure.