answers.usgs.gov 的前十大競爭對手

restec.or.jp

一般財団法人リモート・センシング技術センターは人工衛星などに搭載した観測機器（センサ）を使い、離れた位置から地球表面等を観測をしております。その他、人工衛星画像の販売とデータ検索、データ購入の申し込みを受け付けております。

nationalmap.gov

Large tsunamis have occurred in the United States and will undoubtedly occur again. Significant earthquakes around the Pacific rim have generated tsunamis that struck Hawaii, Alaska, and the U.S. west coast. One of the largest and most devastating tsunamis that Hawaii has experienced was in 1946 from an earthquake along the Aleutian subduction zone. Runup heights reached a maximum of 33 to 55 feet and killed 159 people. The tsunami generated by the 1964 magnitude 9.2 earthquake in the Gulf of Alaska (Prince William Sound) caused damage and loss of life across the Pacific, including Alaska, Hawaii, California, Oregon, and Washington. Since the only major tsunami-generating subduction zones in the Atlantic Ocean are along the Caribbean Sea, tsunamis in the Atlantic have been relatively infrequent. The most noteworthy tsunami resulted from the 1929 magnitude 7.3 Grand Banks earthquake near Newfoundland. The maximum tsunami runup was 6 ...

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