SHEAR WAVE 〓 STRUCTURE FOR THE LITHOSPHERE IN THE LUTZOW-HOLM BAY REGION, EAST ANTARCTICA
スポンサーリンク
概要
- 論文の詳細を見る
Seismic wave attenuation in the lithosphere has been studied in various regions by the analysis of coda amplitudes of S-waves for local earth-quakes. On the basis of the observed facts, the attenuation factor of coda waves (〓_c) is assumed to reflect the averaged 〓 for S-waves (〓_s) in an area within the ellipsoid of the scattering medium in the lithosphere. In this study, layered models of 〓_s for the lithosphere in two tectonically different regions of shield and island arc were estimated from the observed 〓_c at the various lapse times defined as 'time from origin of earthquake'. As for the representative of stable shield regions, five shallow earthquakes observed with a local telemetry seismic network around the Lutzow-Holm Bay region, East Antarctica, were re-analyzed to calculate 〓_c for the lapse time ranging from 20s to 70s in the 4,8 and 16Hz frequency bands. As for the tectonic active island arc region, 〓_c for intra-plate earthquakes observed by the telemetered network in the middle and northern Kinki district, Japan was found in eight lapse time ranges from 20s to 85s at the same three frequency bands. From the resultant 〓_s structure in both regions, it is remarkable that (1) 〓_s for each layer of the same depth in the Lutzow-Holm Bay region takes larger values than those of the Kinki district, particularly in high frequency range; (2) 〓_s for the Lutzow-Holm Bay region has a stronger frequency dependency than in the Kinki district. Another noticeable point is that 〓_s for both regions has a rapid increase near the surface layer, which is attributed to the dependence of 〓_c on lapse time in the short lapse time range. This is predominant in the Kinki district where 〓_s is characterized by low values in the surface layer and a noticeable increase with depth in the upper 5km of the crust.
著者
-
Kanao Masaki
National Institute Of Polar Research
-
Akamatsu Junpei
Disaster Prevention Research Institute Kyoto University
-
Kanao Masaki
National Insitute Of Polar Research
関連論文
- Seismological bulletin of Syowa Station, Antarctica, 2008
- 1. Outline of field observations during 1997-1998(Glaciological Data Collected by the 38th Japanese Antarctic Research Expedition during 1997-1998)
- Glaciological Data Collected by the 38th Japanese Antarctic Research Expedition during 1997-1998 (Glaciology 28)
- Seismic refraction and wide-angle reflection exploration by JARE-43 on Mizuho Plateau, East Antarctica
- 5. Surface meteorological data during oversnow traverses(Glaciological Data Collected by the 38th Japanese Antarctic Research Expedition during 1997-1998)
- 4. Snow temperature data at Dome Fuji Station(Glaciological Data Collected by the 38th Japanese Antarctic Research Expedition during 1997-1998)
- 3. Surface snow density along the traverse route(Glaciological Data Collected by the 38th Japanese Antarctic Research Expedition during 1997-1998)
- 2. Net accumulation of snow(Glaciological Data Collected by the 38th Japanese Antarctic Research Expedition during 1997-1998)
- Gravity Observations along the traverse routes from Syowa Station to Dome Fuji Station, East Antarctica
- CRUSTAL VELOCITY MODELS OF SHEAR WAVES IN EAST ANTARCTICA BY RECEIVER FUNCTION INVERSION OF BROADBAND WAVEFORMS
- Reflection profiling and velocity structure beneath Mizuho traverse route, East Antarctica
- P-wave velocity structure of the ice sheet and the shallow crust beneath the Mizuho traverse route, East Antarctica, from seismic refraction analysis
- CRUSTAL DENSITY STRUCTURE OF THE MIZUHO PLATEAU, EAST ANTARCTICA FROM GRAVITY SURVEY IN 1992
- Analysis of GPS data at Syowa Station and IGS tracking stations
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 1996
- Seismological bulletin of Syowa Station,Antarctica, 1996 (Seismology 32)
- RELATION BETWEEN THE DISTRIBUTION OF DAMAGE CAUSED BY THE 1995 HYOGOKEN-NAMBU EARTHQUAKE AND GROUND VIBRATION CHARACTERISTICS INFERRED FROM MICROSEISMS
- The March 25, 1998 Antarctic Earthquake: Great earthquake caused by postglacial rebound
- OBSERVATIONS OF EARTH TIDES AND EARTH'S FREE OSCILLATIONS BY A SUPERCONDUCTING GRAVIMETER AT SYOWA STATION ANTARCTICA
- AN ANALYSIS OF THE SKS SPLITTING AT SYOWA STATION IN ANTARCTICA
- Aftershock activity of the great 1998 earthquake in the Antarctic plate
- SEISMIC OBSERVATION WITH LOCAL TELEMETRY NETWORK AROUND SYOWA STATION, EAST ANTARCTICA (2)
- Seismic observation with local telemetry network around Syowa Station, East Antarctica (2)
- SEISMIC OBSERVATION WITH LOCAL TELEMETRY NETWORK AROUND SYOWA STATION, EAST ANTARCTICA
- CODA 〓 OF LOCAL EARTHQUAKES OBSERVED ON THE SOUTHEAST TIBETAN PLATEAU : COMPARISON WITH LUTZOW-HOLM BAY REGION, EAST ANTARCTICA
- SHEAR WAVE 〓 STRUCTURE FOR THE LITHOSPHERE IN THE LUTZOW-HOLM BAY REGION, EAST ANTARCTICA
- HETEROGENEITY OF LITHOSPHERE IN THE LUTZOW-HOLM BAY REGION, EAST ANTARCTICA
- UPPER ATMOSPHERE PHYSICS DATA, SYOWA AND ASUKA STATIONS, 1987
- Upper atmosphere physics data, Syowa and Asuka Stations, 1987(Upper Atmosphere Physics 7)
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 2006
- Seismological Bulletin of Syowa Station, Antarctica, 2004
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 2007
- SHEAR WAVE VELOCITY STRUCTURE IN THE CRUST AND UPPERMOST MANTLE BENEATH SYOWA STATION, EAST ANTARCTICA, USING MULTI-TRACE RECEIVER FUNCTION INVERSION OF BROAD-BAND TELESEISMIC WAVEFORMS
- Seismological Bulletin of Syowa Station, Antarctica, 2005
- Seismological Bulletin of Syowa Station, Antarctica, 2003
- Glaciological Data Collected by the 33rd Japanese Antarctic Research Expedition in 1992
- Glaciological data collected by the 33rd Japanese Antarctic Research Expedition in 1992(Glaciology 21)
- Characteristics of the Moho as revealed from explosion seismic reflections beneath the Mizuho Plateau, East Antarctica
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 1998
- Seismological Bulletin of Syowa Station, Antarctica, 2002
- INTERMITTENT MICRO-SEISMIC ACTIVITIES AROUND SYOWA STATION, EAST ANTARCTICA
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 1987
- GRAVITY TIDES OBSERVED AT SYOWA AND ASUKA STATIONS, ANTARCTICA
- Gravity tides observed at Syowa and Asuka Stations,Antarctica (abstract)
- Heterogeneity of lithosphere in the Lutzow-Holm Bay region, East Antarctica (abstract)
- PRELIMINARY REPORT OF LOCAL SEISMIC ACTIVITY AROUND SYOWA STATION, EAST ANTARCTICA
- GLACIER-GENERATED GROUND MOTIONS AT BOMI, SOUTHEASTERN TIBET
- Crustal structure derived from seismic refractions and wide-angle reflections in the Mizuho Plateau, East Antarctica
- LOCAL GEODETIC TIE BETWEEN THE VLBI ANTENNA REFERENCE POINT AND THE SCAR GPS SITE AT SYOWA STATION, ANTARCTICA
- Seismological Bulletin of Syowa Station, Antarctica, 1998 (Seismology 34)
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 2000
- Features of seismic waves recorded by seismic exploration in 2002: Responses from valley structure of the bedrock beneath Mizuho Plateau
- Seismological bulletin of Syowa Station, Antarctica, 1993(Seismology 29)
- Local earthquake activity around Syowa Station, Antarctica
- Seismological bulletin of Syowa Station, Antarctica, 1994(Seismology 30)
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 1994
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 1993
- Origins of the lower crustal reflectivity in the Lutzow-Holm Complex, Enderby Land, East Antarctica
- Seismological bulletin of Syowa Station, Antarctica, 1992(Seismology 27)
- Seismological bulletin of Syowa Station, Antarctica, 1999
- Seismological Bulletin of Syowa Station, Antarctica, 2000
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 1999
- BROAD-BAND AND WIDE DYNAMIC-RANGE SEISMIC OBSERVATIONS WITH AN STS-SEISMOGRAPH AT SYOWA STATION, EAST ANTARCTICA
- Seismological bulletin of Syowa Station, Antarctica, 1987(Seismology 22)
- Seismological bulletin of Syowa Station, Antarctica, 1995(Seismology 31)
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 2009
- RE-SCALING OF SEISMIC EVENTS AT SYOWA STATION, ANTARCTICA, 1987-1990
- Comparison of global synthetic seismograms calculated using the spherical 2.5-D finite-difference method with observed long-period waveforms including data from the intra-Antarctic region
- Seismological belletin of Syowa Station, Antarctica, 2001
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 1995
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 1997
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 2010
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 1992
- SEISMOLOGICAL BULLETIN OF SYOWA STATION, ANTARCTICA, 2011
- Re-scaling of seismic events at Syowa Station, Antarctica, 1987-1990(Seismology 28)
- Seismological Bulletin of Syowa Station, Antarctica, 1997 (Seismology 33)