Reflection coefficient calculation from marine high resolution seismic reflection (Chirp) data and application to an archaeological case study

JM Bull, R Quinn, JK Dix

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

Chirp sub-bottom profilers produce high-resolution images of the near-surface An attribute of the sea-bed reflection in chirp data are fluctuations in polarity between adjacent traces. Two models are proposed and presented to explain this: the first incorporates changes in an acoustic impedance gradient at the sea bed; the second uses changes in the thickness of the uppermost sediment layer. Mixing of adjacent traces produces a consistent polarity for the sea-bed reflector. Reflection coefficients are calculated, using amplitude information derived from single-traces, and polarity information from trace mixing, with application to a marine archaeological case study. The reflection coefficient calculated for the top of a buried 18th century wooden wreck is -0.26.
Original languageEnglish
Pages (from-to)1-11
JournalMarine Geophysical Researches
Volume20
Issue number1
Publication statusPublished - Feb 1998

Fingerprint Dive into the research topics of 'Reflection coefficient calculation from marine high resolution seismic reflection (Chirp) data and application to an archaeological case study'. Together they form a unique fingerprint.

Cite this