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A Robust and Accurate Traveltime Calculation from
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Qin, Yilong | - |
dc.contributor.author | Ko, Seungwon | - |
dc.contributor.author | Shin, Changsoo | - |
dc.contributor.author | Zhang, Zhongjie | - |
dc.contributor.author | Seo, Youngtak | - |
dc.contributor.author | Han, Uk | - |
dc.contributor.author | Chen, Yun | - |
dc.date.accessioned | 2009-08-07T10:01:16Z | - |
dc.date.available | 2009-08-07T10:01:16Z | - |
dc.date.issued | 2004-03 | - |
dc.identifier.citation | Geosystem Engineering, 7, p. 12-20 | en |
dc.identifier.issn | 1226-9328 | - |
dc.identifier.uri | https://hdl.handle.net/10371/6565 | - |
dc.description.abstract | We improve the accuracy and stability of
traveltime calculation method using frequency-domain modeling algorithm. We perform a parameter analysis to obtain the optimum combination of frequency and damping factor and thus improve the accuracy of traveltime. Then we obtain the empirical formula for our numerical algorithm. Lastly, we propose the adaptive frequency and the adaptive damping factor for an inhomogeneous model to eliminate the distortion in the traveltime contour. Twodimensional numerical examples verify that the proposed algorithm gives a much smaller traveltime error and a better traveltime contour for the complex model. Compared to the other two methods, this algorithm computes traveltime that is close to a directly transmitted wave. We demonstrated our algorithm on 2D IFP Marmousi models, and the numerical results show that our algorithm is a faster traveltime calculation method of a directly transmitted wave for imaging the subsurface and transmission tomography. | en |
dc.description.sponsorship | This study is sponsored by the Chinese State Natural Science Foundation (49825108), the Chinese Academy of Sciences (KZCX2-109 and KZ951-B1-407-02), and the Korea Foundation for Advanced Studies. This work was
also financially supported by the National Laboratory Project of the Ministry of Science and Technology and the Brain Korea 21 project of the Ministry of Education. | en |
dc.language.iso | en | - |
dc.publisher | 한국지구시스템공학회 = The Korean society for geosystem engineering | en |
dc.subject | traveltime calculation | en |
dc.subject | frequency-domain modeling | en |
dc.subject | parameter analysis | en |
dc.title | A Robust and Accurate Traveltime Calculation from | en |
dc.type | Article | en |
dc.contributor.AlternativeAuthor | 고승원 | - |
dc.contributor.AlternativeAuthor | 신창수 | - |
dc.contributor.AlternativeAuthor | 서영탁 | - |
dc.contributor.AlternativeAuthor | 한욱 | - |
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