%0 Journal Article
%T Three-component seismic profiling at the Chinese Continental Scientific Drilling site<br>中国大陆科学钻探孔区的数字三分量反射地震调查
%A YANG Wen-Cai
%A ZHU Guang-Ming
%A YANG Zhen-Hua
%A WANG Hong-Lin
%A XU Gang
%A zHoU Yi-Ping
%A YAO Hong
%A LI Gui-Hua
%A <br>杨文采
%A 朱光明
%A 杨振华
%A 王宏琳
%A 徐刚
%A 周一平
%A 姚虹
%A 李桂华
%J 地球物理学报
%D 2007
%I 
%X This paper introduces the data-acquisition and processing method applied in the 3-component seismic investigation in Chinese Continental Scientific Drilling site as well as some primary results of the survey. In order to obtain good converted wave signals, primary wave-field investigation is required for designing the seismic configuration parameters. There are three difficulties should be overcome in the 3-component data processing, they include statics, S-wave velocity analysis and converted-wave stacking. The reason why the 3- component survey is usually performed after completion of the drilling and VSP investigation is because the dataprocessing and interpretation need drilling and VSP data. For instance, without core velocity measurements or VSP interval velocity data, one can hardly establish a reliable S-wave velocity model, and complete the X- and Y- component data processing and interpretation. Comparing with common Z-component surveys, horizontal components show the converted reflectors that can provide particular and significant information related to fluids or anisotropy of deep rocks. On the left part of the X-component depth-stack profile, a special layer of dense horizontal reflectors appears at depth 2600 - 3400 m, which is different from P-wave reflection profile and correlated to gas anomalies of CH4 and CO2, implying a newly-developed fluid and fracture zone.
%K Chinese Continental Drilling
%K Crystallized region
%K Reflection seismic profile
%K Digital 3C survey
%K Fluid in the crust<br>中国大陆钻探
%K 结晶岩区
%K 反射地震剖面
%K 数字三分量测量
%K 地层流体
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=A4D2C05501D77BD0&yid=A732AF04DDA03BB3&vid=771152D1ADC1C0EB&iid=38B194292C032A66&sid=5E191A234CD3698F&eid=C8C16F05E379B334&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=0&reference_num=28