Earthquakes in the Gulf of California recorded using land-based recordings of moored hydrophone arrays

Abstract

We report results of the use of telemetering sonobuoy hydrophones to. record small local earthquakes in the Gulf of California. The signals were recorded with simple radio receivers and visible recorders both on land at Guaymas and on the Scripps Institution of Oceanography ship R/V Melville. In this paper we give preliminary results of the land-based recordings at Guaymas. Results of the recordings on board the Melville will be discussed in a separate paper (Reíd et al, 1973, henceforth referred to as Paper I). We also attempted land-based recordings at Topolobampo but were unsuccessful because of radio interference and inability to find a recording site with sufficient altitude.