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
スポンサーリンク
概要
- 論文の詳細を見る
We have been developing an accurate and efficient numerical scheme, which uses the finite-difference method (FDM) in spherical coordinates, for the computation of global seismic wave propagation through laterally heterogeneous realistic Earth models. In the field of global seismology, traditional axisymmetric modeling has been used widely as an efficient approach since it can solve the 3-D elastodynamic equation in spherical coordinates on a 2-D cross-section of the Earth, assuming structures to be invariant with respect to the axis through the seismic source. However, it has the severe disadvantages that asymmetric structures about the axis cannot be incorporated and the source mechanisms with arbitrary shear dislocation have not been attempted for a long time. Our scheme is based on the framework of axisymmetric modeling but has been extended to treat asymmetric structures, arbitrary moment-tensor point sources, anelastic attenuation, and the Earth center which is a singularity of wave equations in spherical coordinates. All these types of schemes which solve 3-D wavefields on a 2-D model cross-section are classified as 2.5-D modeling, so we have named our scheme the spherical 2.5-D FDM. In this study, we compare synthetic seismograms calculated using our FDM scheme with three-component observed long-period seismograms including data from stations newly installed in Antarctica in conjunction with the International Polar Year (IPY) 2007–2008. Seismic data from inland Antarctica are expected to reveal images of the Earth's deep interior with enhanced resolution because of the high signal-to-noise ratio and wide extent of this region, in addition to the rarity of sampling paths along the rotation axis of the Earth. We calculate synthetic seismograms through the preliminary reference earth model (PREM) including attenuation using a moment-tensor point source for the November 9, 2009 Fiji earthquake. Our results show quite good agreement between synthetic and observed seismograms, which indicates the accuracy of observations in the Antarctica, as well as the feasibility of the spherical 2.5-D modeling scheme.
著者
-
Takenaka Hiroshi
Department Of Chemistry Faculty Of Science Osaka City University
-
Kanao Masaki
National Insitute Of Polar Research
-
Toyokuni Genti
Research Center For Prediction Of Earthquakes And Volcanic Eruptions Graduate School Of Science Toho
-
Wiens Douglas
Earth & Planetary Sciences, Washington University, Campus Box 1169, 1 Brookings Dr, Saint Louis, MO
-
Nyblade Andrew
Department of Geosciences, The Pennsylvania State University, 441 Deike Building, University Park, P
-
Wiens Douglas
Earth & Planetary Sciences Washington University Campus Box 1169 1 Brookings Dr Saint Louis Mo 6
-
Nyblade Andrew
Department Of Geosciences The Pennsylvania State University 441 Deike Building University Park Pa 16
-
Kanao Masaki
National Institute Of Polar Research 10-3 Midori-cho Tachikawa Tokyo 190-8518 Japan
-
Takenaka Hiroshi
Department Of Earth And Planetary Sciences Faculty Of Sciences Kyushu University 6-10-1 Hakozaki Higashi-ku Fukuoka 812-8581 Japan
関連論文
- Seismological bulletin of Syowa Station, Antarctica, 2008
- 3-D finite-difference simulation of seismic fault zone waves : Application to the fault zone structure of the Mozumi-Sukenobu fault, central Japan
- 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)
- Coda Q^ in Awaji Island Estimated from the Aftershock Records of the 1995 Hyogo-ken Nanbu Earthquake
- A New Model of Experimental Allergic Rhinitis Using Japanese Cedar Pollen in Guinea Pigs
- Seismic refraction and wide-angle reflection exploration by JARE-43 on Mizuho Plateau, East Antarctica
- Expression of Gap Junctional Protein Connexins in Human Nasal Epithelium, and Its Contribution to Intercellular Calcium Signalling
- 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
- Ca^ regulation of endocochlear potential in marginal cells
- IL-4-dependent induction of IgE^+ basophils in peripheral blood and IgE^+ B cells in spleen as respective indicators of allergen sensitization and a precursor of cells secreting allergen-specific IgE antibody
- Physiological Role of L-Type Ca^ Channels in Marginal Cells in the Stria Vascularis of Guinea Pigs
- Effects of CO_2/HCO_3^- in Perilymph on the Endocochlear Potential in Guinea Pigs
- IgE Production after Four Routes of Injections of Japanese Cedar Pollen Allergen without Adjuvant : Crucial Role of Resident Cells at Intraperitoneal or Intranasal Injection Site in the Production of Specific IgE toward the Allergen
- Endolymphatic Perfusion with EGTA-Acetoxymethyl Ester Inhibits Asphyxia- and Furosemide-Induced Decrease in Endocochlear Potential in Guinea Pigs
- Differential Susceptibility of Cells Expressing Allogeneic MHC or Viral Antigen to Killing by Antigen-Specific CTL
- Asphyxia and Diuretic-Induced Changes in the Ca^ Concentration of Endolymph
- A 13-year Study of Japanese Cedar Pollinosis in Japanese Schoolchildren
- Exposure to Japanese Cedar Pollen in Early Life and Subsequent Sensitization to Japanese Cedar Pollen
- A longitudinal observation of sensitization to Japanese cedar pollen and house dust mite among schoolchildren
- 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)
- Markedly Increased Nasal Blockage by Intranasal Leukotriene D_4 in an Experimental Allergic Rhinitis Model: Contribution of Dilated Mucosal Blood Vessels
- Lipomatous pleomorphic adenoma of the ceruminous gland
- Effect of Local Nasal Immunotherapy on Nasal Blockage in Pollen-Induced Allergic Rhinitis of Guinea Pigs
- Nasal Blockage Induced by Oral Administration of Non-steroidal Anti-inflammatory Drugs in a Guinea-Pig Model of Allergic Rhinitis
- Effect of Oral Immunotherapy on Nasal Blockage in Experimental Allergic Rhinitis
- Acquired Nasal Hyperresponsiveness Aggravates Antigen-Induced Rhinitis in the Guinea Pig
- Comparison of Cedar Pollen - Induced Allergic Rhinitis in Passively and Actively Sensitized Guinea Pigs
- The March 25, 1998 Antarctic Earthquake: Great earthquake caused by postglacial rebound
- Effect of vertical velocity gradient on ground motion in a sediment-filled basin due to incident SV wave
- An efficient approach of the pseudospectral method for modelling of geometrically symmetric seismic wavefield
- Structure-Activity Relationships of Dermorphin Analogues Containing Chiral Piperazin-2-one and Piperazine Derivatives
- 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
- Comparison of Q^_c Estimates from Coda Envelopes Constructed from One-and Multi-Component Seismograms
- 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
- 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
- An Imaging Technique for Subsurface Faults Using Teleseismic - Wave Records - SH Case -
- Allergic Potency of Japanese Cedar Pollen Cry j 1 Is Reduced by a Low Concentration of Hypochlorous Acid Generated by Electolysis
- A multidomain approach of the Fourier pseudospectral method using discontinuous grid for elastic wave modeling
- Seismological Bulletin of Syowa Station, Antarctica, 2002
- Precise location of the fault plane and the onset of the main rupture of the 2005 West Off Fukuoka Prefecture earthquake
- 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
- FDM computation of seismic wavefield for an axisymmetric earth with a moment tensor point source
- Seismological Bulletin of Syowa Station, Antarctica, 1998 (Seismology 34)
- Accelerating large-scale simulation of seismic wave propagation by multi-GPUs and three-dimensional domain decomposition
- Rupture process at the beginning of the 2007 Chuetsu-oki, Niigata, Japan, earthquake
- A numerical analysis of seismic waves for an anisotropic fault zone
- 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
- Treatment of an Infinitely Extended Free Surface for Indirect Formulation of the Boundary Element Method
- Dialyzability of the Antiepileptic Drug Zonisamide in Patients Undergoing Hemodialysis
- 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
- An imaging technique for subsurface faults using Teleseismic-Wave Records II -Improvement in the detectability of subsurface faults-
- Strong S-wave anisotropy in the aftershock region of the 2000 Tottori-ken Seibu, Japan, earthquake (Mw6.6)
- 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, 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
- A scheme for estimating the location and tangential plane of a reflector
- Precise location of the fault plane and the onset of the main rupture of the 2005West Off Fukuoka Prefecture earthquake
- Role of cytokines in lavage or drainage fluid after hemithyroidectomy in wound healing : Involvement of histamine in the acceleration and delay of wound healing