title: Earthquake source fault beneath Tokyo.
abstract: Devastating earthquakes occur on a megathrust fault that underlies the Tokyo metropolitan region. We identify this fault with use of deep seismic reflection profiling to be the upper surface of the Philippine Sea plate. The depth to the top of this plate, 4 to 26 kilometers, is much shallower than previous estimates based on the distribution of seismicity. This shallower plate geometry changes the location of maximum finite slip of the 1923 Kanto earthquake and will affect estimations of strong ground motion for seismic hazards analysis within the Tokyo region.
authors: Earthquake Research Institute (ERI), University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan.
authors: Hiroshi
authors: H
authors: Sato
authors: Naoshi
authors: N
authors: Hirata
authors: Kazuki
authors: K
authors: Koketsu
authors: David
authors: D
authors: Okaya
authors: Susumu
authors: S
authors: Abe
authors: Reiji
authors: R
authors: Kobayashi
authors: Makoto
authors: M
authors: Matsubara
authors: Takaya
authors: T
authors: Iwasaki
authors: Tanio
authors: T
authors: Ito
authors: Takeshi
authors: T
authors: Ikawa
authors: Taku
authors: T
authors: Kawanaka
authors: Keiji
authors: K
authors: Kasahara
authors: Steven
authors: S
authors: Harder