FY 1976

Preliminary results of the first Soviet-American Tsunami expedition

Soloviev, S.L., V.M. Popov, V.G. Pavlenko, S.S. Lappo, B.J. Bobrovski, V.V. Efimov, A.E. Zhukov, F.I. Konstantinov, A.E. Kulikov, V.J. Maramzin, G.A. Novinskaja, A.B. Rabinovich, A.E. Rozhdestvenskij, S.A. Soloviev, A.I. Spirin, O.I. Jakovenko, G.R. Miller, R.R. Harvey, J.M. Vitousek, and D.Y. Shinmoto

Hawaii Institute of Geophysics and Joint Tsunami Research Effort, NOAA-JTRE-162 and HIG-76-8, 71 pp (1975)

The 1975 Soviet-American Tsunami Expedition was designed to observe long wave activity in the deep ocean. The field effort comprised a two-month cruise along the Pacific coast of Hokkaido and the southern Kuril Islands, during which the following free vehicle instruments were deployed: nine bottom pressure recorders, one vertical electric field recorder, and one ocean bottom seismograph. In addition, three buoyed current meter strings were moored and hydrographic and meteorological stations were made throughout the cruise. Although no large tsunami occurred during this period, the data permit detailed studies of the tides, background wave energy, trapped waves, typhoon-induced sea level variations, and deep seismic structure. The present report describes the data collection and preliminary analysis.