Frequency-dependent Attenuation of High-frequency P and S Waves in the Upper Crust in Western Nagano, Japan

Yoshimoto, Keitaro; Sato, Haruo; Iio, Yoshihisa; Ito, Hisao; Ohminato, Takao; Ohtake, Masakazu

doi:10.1007/978-3-0348-8711-3_12

Cited by 33 publications

(33 citation statements)

References 31 publications

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“…Conversely, intrinsic attenuation refers to various mechanisms that convert vibration energy into heat through (Taylor et al 1986), 3 Pn, eastern Canada (Zhu et al 1991), 4 Pg, France (Campillo and Plantet 1991), 5 Depth < 40 km, northern Caribbean (Frankel 1982), 6 Depth < 10 km, Arette, Pyrénées (Modiano and Hatzfeld 1982), 7 Depth 5 25 km, southern Kurils (Fedotov and Boldyrev 1969), 8 Southern Norway (Kvamme and Havskov 1989), 9 Kanto, Japan (Yoshimoto et al 1998), 10 Upper crust of western Nagano, Japan (Yoshimoto et al 1998), 11 Crust, SE Korea (Chung and Sato 2001), 12 Marche, Italy (Castro et al 1999), 13 Crust, Bhuj, India (Padhy 2009) friction, viscosity, and thermal relaxation processes. Conversely, intrinsic attenuation refers to various mechanisms that convert vibration energy into heat through (Taylor et al 1986), 3 Pn, eastern Canada (Zhu et al 1991), 4 Pg, France (Campillo and Plantet 1991), 5 Depth < 40 km, northern Caribbean (Frankel 1982), 6 Depth < 10 km, Arette, Pyrénées (Modiano and Hatzfeld 1982), 7 Depth 5 25 km, southern Kurils (Fedotov and Boldyrev 1969), 8 Southern Norway (Kvamme and Havskov 1989), 9 Kanto, Japan (Yoshimoto et al 1998), 10 Upper crust of western Nagano, Japan (Yoshimoto et al 1998), 11 Crust, SE Korea (Chung and Sato 2001), 12 Marche, Italy (Castro et al 1999), 13 Crust, Bhuj, India (Padhy 2009) friction, viscosity, and thermal relaxation processes.…”

Section: Intrinsic Attenuation Mechanismsmentioning

confidence: 99%

“…There are several review papers that discuss proposed mechanisms for intrinsic attenuation that lead to frequency-independent Q 1 P and Q 1 S (e.g. By assuming for the lithosphere based on measurements of P-and S-wave attenuation: 1 MM8 global model (Anderson et al 1965), 2.1 Basin and Range Province, 2.2 U. S. Shield (Taylor et al 1986), 3 Depth <45 km of the SL8 global model (Anderson and Hart 1978), 4 Garm, Central Asia , 5 Kanto, Japan (Yoshimoto et al 1993), 6 Pg and Lg, France (Campillo and Plantet 1991), 7 Depth < 40 km, northern Caribbean (Frankel 1982), 8 Southern Norway (Kvamme and Havskov 1989), 9 Depth < 10 km, Arette, Pyrénées (Modiano and Hatzfeld 1982), 10 Upper crust, Rio Grande Rift, U.S.A. (Carpenter and Sanford 1985), 11 Depth < 7 km, San Andreas Fault (Bakun et al 1976), 12 Depth < 7 km, Swabian Jura, Germany (Hoang-Trong 1983), 13 Southern Kurils (Fedotov and Boldyrev 1969), 14 Anza, California (Hough et al 1988), 15 Upper crust of western Nagano, Japan (Yoshimoto et al 1998), 16 Western Pacific (Butler et al 1987), 17.1 P/SV, 17.2 P/SH, Marche, Italy (Castro et al 1999), 18 Crust, SE Korea (Chung and Sato 2001), 19 Crust, Bhuj, India (Padhy 2009) that rocks are composed of elements with a range of dimensions, the attenuation caused by the mechanism can be made frequency-independent over some frequency range. Attenuation has been considered an important parameter to measure and characterize sedimentary rocks for petroleum exploration, and this has led to an effort to develop models explaining the observed attenuation in sedimentary rocks (e.g.…”

Section: Intrinsic Attenuation Mechanismsmentioning

confidence: 99%

“…Reported values of Q 1 S for the lithosphere: 1 Crust of the SL8 global model(Anderson and Hart 1978), 2.1 Tectonic upper crust, 2.2 Stable upper crust, 2.3 Lower crust(Mitchell 1995), 3 Hindu-Kush(Roecker et al 1982), 4 Kanto, Japan (Aki 1980a), 5.1 Eastern Kanto, Japan(Sato and Matsumura 1980), 5.2 Kanto, Japan(Yoshimoto et al 1993), 6.1 Surface data, 6.2 Borehole data in S. California (Adams and Abercrombie 1998), 7 Shallow crust at western Nagano, Japan(Yoshimoto et al 1998), 8.1 Central California, 8.2 Hawaii, 8.3 Long Valley in California, U.S.A.…”

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Seismic Wave Propagation and Scattering in the Heterogeneous Earth : Second Edition

Sato¹,

Fehler²,

Maeda³

2012

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385

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Scattering due to randomly distributed small-scale heterogeneities in the earth significantly changes seismic waveforms of local earthquakes especially for short periods. Scattering excites long lasting coda waves after the direct arrival and broadens the apparent duration of oscillation with increasing travel distance much longer than the source duration time. Models of propagation through deterministic structures such as those with horizontally uniform velocity layers cannot explain those observed phenomena. Our goal in writing this book is to put a focus on the phenomena of seismic wave scattering by distributed heterogeneities in the earth, especially in the lithosphere, where stochastic treatment is essential to describe both heterogeneous media and wave propagation through them. Stochastic approaches and deterministic approaches are complementary for the construction of a unified image of the earth's structure.Keiiti Aki was a distinguished pioneer who extensively developed various stochastic methods for short-period seismology. His strong encouragement and continuous support for us were essential in motivating us to write the first edition of this book. Before Kei passed away in 2005, he kindly cited our book when he argued for the importance of the study on seismic wave scattering caused by small-scale heterogeneity in his letter to V. I. Keilis-Borok, ". . . To a geodynamicist, the earth's property is smoothly varying within bodies bounded by large-scale interfaces. Most seismologists also belong to this "smooth earth club," because once you start with an initial model of smooth earth your data usually do not require the addition of smallscale heterogeneity to your initial model. As summarized well in a recent book by Sato and Fehler (1998), the acceptance of coda waves in the data set is needed for the acceptance of small-scale seismic heterogeneity of the lithosphere. There are an increasing number of seismologists who accept it, forming the "rough earth club." I believe that you are also a member of the rough earth club, judging from the emphasis on the hierarchical heterogeneity of the lithosphere. . . . "(Aki 2009).The first edition of this book was fortunately accepted in the geophysical community as a textbook, especially for graduate students. Furthermore it has been often cited in the physics community since this book introduced various aspects of wave scattering in real heterogeneous media. During the decade following the vii viii Preface to the Second Edition publication of the first edition, there were developments in stochastic methods and analyses focusing on seismogram envelopes. Radiative transfer theory has been used not only for the study of coda envelopes but also for the analysis of whole seismogram envelopes. These studies made it possible to resolve the spatial variation of scattering strength. There have been developments in the statistical description of wave propagation in random media that reliably predict the delay of peak amplitude from the onset and the broadening of seismogr...

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Section: Intrinsic Attenuation Mechanismsmentioning

confidence: 99%

Section: Intrinsic Attenuation Mechanismsmentioning

confidence: 99%

mentioning

confidence: 99%

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Seismic Wave Propagation and Scattering in the Heterogeneous Earth : Second Edition

Sato¹,

Fehler²,

Maeda³

2012

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458

385

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“…Since earthquakes with small hypocenter distance have rich high-frequency composition, we can use higher frequency to study attenuation as Yoshimoto et al (1998) did in Kanto of Japan. After analyzing earthquakes within hypocenter distance 2-12 km which are recorded by seismographs under well, Yoshimoto et al (1998) filtered the original seismogram for five frequency-bands, the center of which are 16 Hz, 25 Hz, 40 Hz, 64 Hz and 102 Hz respectively, and then time-windows of coda-wave and direct wave taken as 0.5 s and 0.1 s and t¢ as 5.5 s to get the direct attenuation of upper crust of Kanto in Japan.…”

Section: Discussionmentioning

confidence: 99%

“…Sato (1980) applied this method to a data set of deep-borehole observation and got the similar value of Qs 1 in this area. Chung and Sato (2001) and Yoshimoto et al (1998) calculated the Qs ~ and Q~ in Nagano of Japan and southeast of South Korea respectively using the same method later on. Chung and Sato (2001) and Yoshimoto et al (1998) calculated the Qs ~ and Q~ in Nagano of Japan and southeast of South Korea respectively using the same method later on.…”

Section: Introductionmentioning

confidence: 99%

Frequency-dependent attenuation of P and S waves in Yunnan region

et al. 2005

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We analyzed digital seismogram data of 5 668 earthquakes that occurred in Yunnan region between July of 1999 and December of 2003. Among the 22 seismic stations, six ones, namely Baoshan, Yongsheng, Lijiang, Heqing, Yimen, and Luquan, were selected and their attenuations of P and S waves were measured by using the extended coda-normalization method. The six stations were classified into three regions according to their location, that is, Baoshan area, Yongsheng-Lijiang-Heqing (YLH) area and Luquan-Yimen (LY) area. The values of Qs 1 and Q~,I are expressed as Qs 1 = 0.008 67f -0.86 , Qp1 = 0.01 i 55f -°93 , Qs I = 0.018 24f ~'94 , Q~l = 0.022 88f -°91 , and Qs I = 0.016 47f ~'91 , Q~I = 0.028 26f -°'97 in Baoshan, YLH, LY areas respectively. The attenuation of YLH, LYare closer to each other, however, Baoshan area is apparently lower. Comparing attenuation in the three areas with other areas of the world using the same method, it is suggested that the attenuations of P and S waves in YLH and LY areas are close to Kanto of Japan, but much higher than southeast of South Korea. The Qs ~ and Q~I in Baoshan area are slightly higher than southeastern South Korea. Furthermore, the results indicate that our Qs ~ in Yunnan area is close to others by analyzing the coda attenuation.

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Source parameter scaling and radiation efficiency of microearthquakes along the Irpinia fault zone in southern Apennines, Italy

2014

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We analyzed the P and S wave displacement spectra of 717 microearthquakes in the moment range 4 × 10 9 À 2 × 10 14 N m recorded at the dense networks operating in southern Apennines (Italy) and deployed along the 1980 M s 6.9 Irpinia earthquake fault zone. Source, attenuation, and site parameters are estimated by using a parametric modeling approach, which is combined with a multistep, nonlinear inversion strategy. We found that in the analyzed frequency band, an attenuation model with constant Q has to be preferred to frequency-dependent Q models. Consistent estimates of the median P and S quality factors e Q P ¼ 167 (90; 296) and e Q S ¼ 226 (114; 417) are obtained from two different techniques and relatively high values of Q S /Q P (median value 1.3, (0.8; 2.1)) are found in the same depth range where high V P /V S and a peak in seismicity distribution are observed. This is the evidence for a highly fractured, partially, or completely fluid-saturated medium embedding the Irpinia fault zone, down to crustal depths of 15-20 km. A nearly constant stress drop ( f Δσ ¼ 1:4 MPa, (0.4; 5.0)) and apparent stress (e τ a ¼ 0:1 MPa, (0.03, 0.4)) scaling of P and S corner frequencies and seismic energies is observed above a seismic moment value of about 10 11 N m. The measured radiation efficiency is low (g η SW ¼ 0:06; 0:03; 0:13 ð Þ ), e.g., the radiated energy is only a small fraction of the whole energy spent by friction and fracture development. A large positive dynamic overshoot (high dynamic shear strength) can be the dominant mechanism controlling the microearthquake fractures along the Irpinia fault zone.

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Frequency-dependent Attenuation of High-frequency P and S Waves in the Upper Crust in Western Nagano, Japan

Cited by 33 publications

References 31 publications

Seismic Wave Propagation and Scattering in the Heterogeneous Earth : Second Edition

Seismic Wave Propagation and Scattering in the Heterogeneous Earth : Second Edition

Frequency-dependent attenuation of P and S waves in Yunnan region

Source parameter scaling and radiation efficiency of microearthquakes along the Irpinia fault zone in southern Apennines, Italy

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