Abstract
Previously it was shown how the time break could be determined on deep‐sea seismic records from the water sound arrivals. An extension of this problem has been made for the more general case of a sloping sea bottom. The depth of shot below the surface of the sea, shot‐detector distance and the direction and magnitude of the sea‐bottom slope may be determined by successive approximations. This is done, using the ratio of the difference in time of arrival of the direct water wave and the first reflection from the surface of the sea to the difference in time of the second and first reflection, and the ratio of the difference in time of arrival of the second and first reflections to the difference in time of arrival of the third and second reflections from the surface of the sea. The converse of the method could be used to determine sea‐bottom slopes in hydrographic surveys.
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