Open AccessAn Interpretation of First‐Arrival Data from the Continental Margin Refraction Experiment
Author(s) -
Bamford S. A. D.
Publication year - 1971
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1971.tb02174.x
Subject(s) - seismometer , geology , seismology , continental margin , seismic refraction , refraction , continental crust , continental shelf , crust , mantle (geology) , geophysics , oceanography , tectonics , physics , optics
Summary An explosion experiment was carried out in 1969 in which 68 depth charges were fired along lines south and south‐west of Ireland. Seismic waves were recorded at eleven temporary seismometer stations in Ireland, Wales and England, and by five sonobuoy stations at sea. The experiment was intended to give a seismic section of the crust and upper mantle from Wales to the continental margin and was designed with a time‐term approach to the refraction interpretation in mind. This paper describes the time‐term analysis applied to first‐arrival data from those shots in the Celtic Sea, 49 in all. It is concluded that a complex continental crust is present in this region. The time‐term method described here includes some novel aspects and these are illustrated by a re‐interpretation of some published data.