کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1742927 | 1521976 | 2016 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Development of surface-wave monitoring system for leaked CO2 using a continuous and controlled seismic source
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Development of surface-wave monitoring system for leaked CO2 using a continuous and controlled seismic source Development of surface-wave monitoring system for leaked CO2 using a continuous and controlled seismic source](/preview/png/1742927.png)
چکیده انگلیسی
To detect CO2 leakage from CO2 geological storage, we describe a seismic monitoring method using a continuous and controlled seismic source system, the Accurately Controlled Routinely Operated Signal System (ACROSS). The method applies surface-wave analysis to monitor the shallow subsurface from the temporal-variation (time-variation) of surface-wave phase velocity. Our numerical simulation study for CO2 leakage through fault zones indicated that the spatial distribution of leaked CO2 can be estimated from small temporal-variation of local phase velocities (⿼1⿿3%). To demonstrate the method in a field case, we analyzed continuous seismic records acquired with ACROSS. We clearly extracted a dispersion curve of surface waves in the frequency range excited by the ACROSS (5.015⿿15.015 Hz). In particular, we obtained reliable estimates of phase velocities in 10⿿15 Hz frequency range, in which the time-variation of phase velocities was better than 1% accuracy. This temporal stability was sufficient to allow us to detect changes in phase velocities associated with CO2 leakage before leaked CO2 reached the surface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Greenhouse Gas Control - Volume 45, February 2016, Pages 94-105
Journal: International Journal of Greenhouse Gas Control - Volume 45, February 2016, Pages 94-105
نویسندگان
Tatsunori Ikeda, Takeshi Tsuji, Toshiki Watanabe, Koshun Yamaoka,