Detail info.

GAP_P4 Global P wave Tomography Model

  • Title
  • GAP_P4 Global P wave Tomography Model
  • Data Set Citation
    • Dataset Creator
    • Department of Deep Earth Structure and Dynamics Research
    • Dataset Title
    • GAP_P4 Global P wave Tomography Model
    • Other Citation Details
    • Obayashi, M., Yoshimitsu, J., Nolet, G., et al. (2013). Finite frequency whole mantle P wave tomography: Improvement of subducted slab images. Geophysical Research Letters 40: 5652-5657. (doi: 10.1002/2013GL057401), and Fukao, Y., and Obayashi, M. (2013). Subducted slabs stagnant above, penetrating through, and trapped below the 660 km discontinuity. Journal of Geophysical Research, 118: 5920-5938. (doi: 10.1002/2013JB010466)
    • Online Resource
    • http://d-earth.jamstec.go.jp/GAP_P4/
  • Summary
  • GAP_P4 [Obayashi et al.(2013), Fukao and Obayashi (2013)] is our latest whole mantle P wave tomographic model. We used two data groups; short-period data of more than 10 million picked-up onset times and long-period data of more than 20 thousand differential travel times measured by waveform cross correlation. Finite frequency kernels were calculated at the corresponding frequency bands for both long- and short-period data. With respect to an earlier model GAP_P2, we find important improvements especially in the transition zone and uppermost lower mantle beneath the South China Sea and the southern Philippine Sea owing to broadband ocean bottom seismometers (BBOBSs) deployed in the western Pacific Ocean where station coverage is poor. This new model is different from a model in which the full data set is interpreted with classical ray theory. BBOBS observations should be more useful to sharpen images of subducted slabs than expected from simple raypath coverage arguments.
  • Science Keywords
  • EARTH SCIENCE->SOLID EARTH->SEISMOLOGY
  • ISO Topic Category
  • GEOSCIENTIFIC INFORMATION
  • Location
  • GEOGRAPHIC REGION->GLOBAL
  • Personnel
    • Role
    • TECHNICAL CONTACT
    • Affiliation
    • Masayuki Obayashi / Department of Deep Earth Structure and Dynamics Research
    • Organization
    • JAMSTEC
    • E-mail
    • obayashi@jamstec.go.jp
    • Role
    • DIF AUTHOR
    • Affiliation
    • Data Management Office
    • Organization
    • JAMSTEC
    • E-mail
    • dmo@jamstec.go.jp
  • Related URL
    • URL Type
      • Type
      • GET DATA
    • URL
    • http://d-earth.jamstec.go.jp/GAP_P4/