Automated analysis of marine refraction data: A computer algorithm

Autor:	C. Patrick Ervin, L. D. McGinnis, M. L. Hall, R. M. Otis
Rok vydání:	1983
Předmět:	Geophysics Optics Geochemistry and Petrology business.industry Constant velocity business Geodesy Geology Computer algorithm
Zdroj:	GEOPHYSICS. 48:582-589
ISSN:	1942-2156 0016-8033
DOI:	10.1190/1.1441488
Popis:	A computer algorithm is described that automates the processing of refraction data acquired by conventional, multichannel, seismic reflection profiling, beginning with the determination of the first arrival times and ending with a contoured velocity‐depth section. Traces for several closely spaced shots are first summed to suppress noise. Each stacked trace is convolved with a box operator to convert the first break to a peak that can be detected by the computer. The algorithm calculates intercept times using running averages of slopes. Depths to refractors are plotted and a velocity‐depth profile, interpolated at constant velocity intervals, is printed as a contoured cross‐section. A profile crossing Georges Bank, northwest Atlantic Ocean, is interpreted by both automatic and manual techniques for comparison.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::46209ea37c5f44aa54aee9b4d64c9957 https://doi.org/10.1190/1.1441488 Zobrazit plný text záznamu