Surface-wave tomography from ambient seismic noise of accelerograph networks in southern Korea

被引:97
作者
Kang, Tae-Seob [1 ]
Shin, Jin Soo [1 ]
机构
[1] Korea Inst Geosci & Mineral Resources, Earthquake Res Ctr, Taejon 305350, South Korea
关键词
D O I
10.1029/2006GL027044
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
An efficient and robust cross-correlation technique for estimation of surface wave Green's function between two locations is applied to a set of ambient noise data recorded by accelerograph networks in the southern Korea. We have estimated 1843 group velocities of Rayleigh waves in the period band of 2-4 seconds from correlation pairs of 91 accelerograph stations. Relatively dense and uniform coverage of the pairs provides us with high-resolution tomographic image of surface-wave group velocities in the region. The resulting group-velocity distribution correlates well with the characteristic features of geological map of the region, displaying low velocities for the sedimentary basins and regions of volcanic and metasedimentary rocks, and high velocities for the regions where granitoid basement rocks outcrop. The short-period information from the accelerograph network can enhance resolution of the subsurface structures at depths within a few kilometers, which may be predominantly responsible for simulation results of strong ground motions.
引用
收藏
页数:5
相关论文
共 29 条
[1]   ORIGIN OF CODA WAVES - SOURCE, ATTENUATION, AND SCATTERING EFFECTS [J].
AKI, K ;
CHOUET, B .
JOURNAL OF GEOPHYSICAL RESEARCH, 1975, 80 (23) :3322-3342
[2]  
Aki K., 1957, B EARTHQ RES I TOKYO, V35, P415
[3]   Propagation of regional seismic phases (Lg and Sn) and Pn velocity structure along the Africa-Iberia plate boundary zone:: tectonic implications [J].
Calvert, A ;
Sandvol, E ;
Seber, D ;
Barazangi, M ;
Vidal, F ;
Alguacil, G ;
Jabour, N .
GEOPHYSICAL JOURNAL INTERNATIONAL, 2000, 142 (02) :384-408
[4]   Long-range correlations in the diffuse seismic coda [J].
Campillo, M ;
Paul, A .
SCIENCE, 2003, 299 (5606) :547-549
[5]   Crustal structure in southern Korea from joint analysis of teleseismic receiver functions and surface-wave dispersion [J].
Chang, SJ ;
Baag, CE .
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 2005, 95 (04) :1516-1534
[6]   On the correlation of seismic microtremors -: art. no. B11313 [J].
Chávez-García, FJ ;
Luzón, F .
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 2005, 110 (B11) :1-12
[7]   Crustal velocity structure across the southern Korean Peninsula from seismic refraction survey [J].
Cho, HM ;
Baag, CE ;
Lee, JM ;
Moon, WM ;
Jung, H ;
Kim, KY ;
Asudeh, I .
GEOPHYSICAL RESEARCH LETTERS, 2006, 33 (06)
[8]   Tectonic and sedimentary evolution of the Korean peninsula: a review and new view [J].
Chough, SK ;
Kwon, ST ;
Ree, JH ;
Choi, DK .
EARTH-SCIENCE REVIEWS, 2000, 52 (1-3) :175-235
[9]  
Chun S.S, 1992, SEDIMENTARY BASINS K, P60
[10]   Ultrasonic pulse compression with one-bit time reversal through multiple scattering [J].
Derode, A ;
Tourin, A ;
Fink, M .
JOURNAL OF APPLIED PHYSICS, 1999, 85 (09) :6343-6352