Evaluation of seismic reflector slopes with a Yoyo‐CTD
Evaluation of seismic reflector slopes with a Yoyo‐CTD
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DOI：
10.1029/2009gl038964
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发表时间：
2009-12
影响因子：
5.2
通讯作者：
G. Krahmann;C. Papenberg;P Brandt;M. Vogt
中科院分区：
文献类型：
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作者：
G. Krahmann;C. Papenberg;P Brandt;M. Vogt
2007年春，在加迪斯湾进行了一次专门的地震和海洋学实验。使用两艘研究船同时进行了地震和水文观测。在Meddy内长达12小时的站点，电导率温度深度（CTD）探头反复下降和上升，同时地震船在附近的轨道上进行重复测量。在此期间，收集了17个CTD剖面，覆盖了500至1700米的深度间隔。CTD数据显示Meddy的高温和盐度以及不同的侵入特征。当转换成反射系数并与震源信号卷积时，CTD数据与附近的地震数据吻合得很好。CTD导出的反射体的时间/空间斜率与等密度线的时间/空间斜率的比较显示，当斜率在短于4小时的间隔内确定时，具有良好的一致性。
In spring 2007 a dedicated seismic and oceanographic experiment was conducted in the Gulf of Cadiz. Employing two research vessels seismic and hydrographic observations were made contemporaneously and in close proximity. At a 12 hour long station inside a Meddy a conductivity‐temperature‐depth (CTD) probe was lowered and raised repeatedly while the seismic vessel conducted a repetitive survey on tracks nearby. Over the period 17 CTD profiles were collected covering the depth interval from 500 to 1700 m. The CTD data show the Meddy's elevated temperatures and salinities as well as varying intrusive features. When converted into reflection coefficients and convoluted with the seismic source signal the CTD data agrees well with nearby seismic data. The comparison of the temporal/spatial slopes of CTD‐derived reflectors with those of isopycnals shows a good agreement when the slopes are determined over intervals shorter than 4 hours.