Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005geoji.160..840a&link_type=abstract
Geophysical Journal International, Volume 160, Issue 4, pp. 840-848.
Astronomy and Astrophysics
Astronomy
29
Atmospheres, Global Positioning System (Gps), Ionosphere, Tsunamis
Scientific paper
Tsunami waves propagating across long distances in the open-ocean can induce atmospheric gravity waves by dynamic coupling at the surface. In the period range 10 to 20 minutes, both have very similar horizontal velocities, while the gravity wave propagates obliquely upward with a vertical velocity of the order of 50 m s-1, and reaches the ionosphere after a few hours. We use ionospheric sounding technique from Global Positioning System to image a perturbation possibly associated with a tsunami-gravity wave. The tsunami was produced after the Mw= 8.2 earthquake in Peru on 2001 June 23, and it reached the coast of Japan some 22 hours later. We used data from the GEONET network in Japan to image small-scale perturbations of the Total Electron Content above Japan and up to 400 km off shore. We observed a short-scale ionospheric perturbation that presents the expected characteristics of a coupled tsunami-gravity wave. This first detection of the gravity wave induced by a tsunami opens new opportunities for the application of ionospheric imaging to offshore detection of tsunamis.
Artru Juliette
Ducić Vesna
Kanamori Hiroo
Lognonné Philippe
Murakami Makoto
No associations
LandOfFree
Ionospheric detection of gravity waves induced by tsunamis does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Ionospheric detection of gravity waves induced by tsunamis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ionospheric detection of gravity waves induced by tsunamis will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1216242