深海之下地震波速度为每秒6.9至7.6公里的地壳层

Crustal Layer of Seismic Velocity 6.9 to 7.6 Kilometers per Second under the Deep Oceans.

作者信息

Maynard G L

出版信息

Science. 1970 Apr 3;168(3927):120-1. doi: 10.1126/science.168.3927.120.

DOI:10.1126/science.168.3927.120

Abstract

Refraction measurements made in the deep ocean between the Marshall and Hawaiian islands reveal a layer of seismic velocity 7.3 kilometers per second between the 6.8 kilometer per second oceanic crustal layer and the mantle. This layer, normally masked as a second arrival, is revealed by continuous air gun refraction data. The layer may be widespread in the deep oceans.

摘要

在马绍尔群岛和夏威夷群岛之间的深海进行的折射测量显示，在速度为每秒6.8公里的大洋地壳层和地幔之间存在一层地震波速度为每秒7.3公里的物质。这一层通常作为二次波被掩盖，通过连续的气枪折射数据得以揭示。该层可能在深海广泛存在。