Development of surface-wave monitoring system for leaked CO2 using a continuous and controlled seismic source

Tatsunori Ikeda, Takeshi Tsuji, Toshiki Watanabe, Koshun Yamaoka

研究成果: ジャーナルへの寄稿記事

6 引用 (Scopus)

抄録

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 10-15Hz 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.

元の言語英語
ページ(範囲)94-105
ページ数12
ジャーナルInternational Journal of Greenhouse Gas Control
45
DOI
出版物ステータス出版済み - 2 1 2016

Fingerprint

Phase velocity
seismic source
phase velocity
monitoring system
Surface waves
surface wave
Signal systems
Monitoring
leakage
temporal variation
Spatial distribution
wave velocity
fault zone
spatial distribution
Computer simulation
simulation
method

All Science Journal Classification (ASJC) codes

  • Pollution
  • Energy(all)
  • Industrial and Manufacturing Engineering
  • Management, Monitoring, Policy and Law

これを引用

Development of surface-wave monitoring system for leaked CO2 using a continuous and controlled seismic source. / Ikeda, Tatsunori; Tsuji, Takeshi; Watanabe, Toshiki; Yamaoka, Koshun.

:: International Journal of Greenhouse Gas Control, 巻 45, 01.02.2016, p. 94-105.

研究成果: ジャーナルへの寄稿記事

@article{b8cda787da9f4ae7b49ed03dd782bad8,
title = "Development of surface-wave monitoring system for leaked CO2 using a continuous and controlled seismic source",
abstract = "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 10-15Hz 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.",
author = "Tatsunori Ikeda and Takeshi Tsuji and Toshiki Watanabe and Koshun Yamaoka",
year = "2016",
month = "2",
day = "1",
doi = "10.1016/j.ijggc.2015.11.030",
language = "English",
volume = "45",
pages = "94--105",
journal = "International Journal of Greenhouse Gas Control",
issn = "1750-5836",
publisher = "Elsevier",

}

TY - JOUR

T1 - Development of surface-wave monitoring system for leaked CO2 using a continuous and controlled seismic source

AU - Ikeda, Tatsunori

AU - Tsuji, Takeshi

AU - Watanabe, Toshiki

AU - Yamaoka, Koshun

PY - 2016/2/1

Y1 - 2016/2/1

N2 - 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 10-15Hz 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.

AB - 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 10-15Hz 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.

UR - http://www.scopus.com/inward/record.url?scp=84951299683&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84951299683&partnerID=8YFLogxK

U2 - 10.1016/j.ijggc.2015.11.030

DO - 10.1016/j.ijggc.2015.11.030

M3 - Article

AN - SCOPUS:84951299683

VL - 45

SP - 94

EP - 105

JO - International Journal of Greenhouse Gas Control

JF - International Journal of Greenhouse Gas Control

SN - 1750-5836

ER -