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Abstract

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.

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)

Personnel

Role
TECHNICAL CONTACT
Contact
Masayuki Obayashi / Department of Deep Earth Structure and Dynamics Research JAMSTEC (obayashi@jamstec.go.jp)
Role
DIF AUTHOR
Contact
dmo@jamstec.go.jp (dmo@jamstec.go.jp)

Keyword List

ISO Topic Category
GEOSCIENTIFIC INFORMATION
Parameter
EARTH SCIENCE>SOLID EARTH>TECTONICS>EARTHQUAKES
Platform
Other
JAMSTEC

Location

GEOGRAPHIC REGION>GLOBAL

Use Constraints

Please refer to Data Site Policy at https://www.jamstec.go.jp/e/database/data_policy.html . Please also refer Obayashi et al.(2013), and Fukao and Obayashi (2013).

Language

ENGLISH

Originating Center

JAMSTEC

Organization

Organization Type
ORIGINATOR
Organization Name
Short Name
JAMSTEC
Long Name
Japan Agency for Marine-Earth Science and Technology
Personnel
Role
DATA CENTER CONTACT
Contact
dmo@jamstec.go.jp (dmo@jamstec.go.jp)

Related URL

Description
GAP_P4 Global P wave Tomography model
Description
GAP_P4 Global P wave Tomography Model - Catalog Page

Last Metadata Revision Date

2022-11-25