Rogional Observation Center for Earthquake Prediction,Far fculty of Science,Kyoto University
Rogional Centeor Earthquake Prediction Observation,School of Science,Nagoya University
抄録(英)
The P-wave velocity structure of a part of the Prince Olav Coast, East Antarctica was revealed by a seismic refraction experiment conducted by the 21st Japanese Antarctic Research Expedition in July 1980. Ten seismic stations were set along a line with a length of about 10 km at intervals of about 1 km. The station consists of a seismometer and a direct analogue data-recorder with an electric panel-heater in an insulated box. The observed travel times of the first and later arrivals from two explosions at both ends of the line were analyzed. The P-wave velocity of the basement complex is 6.02 km/s which is a typical value in East Antarctica. This basement complex is covered by the ice sheet with the thickness of about 700-1000 m. No layer with a velocity less than 6 km/s is detected between the ice sheet and the basement complex.
雑誌書誌ID
AA00733470
雑誌名
Memoirs of National Institute of Polar Research. Ser. C, Earth sciences