SEISMIC STRATIGRAPHY IN HIGH RESOLUTION SHALLOW MARINE SEISMIC DATA OF THE GEMLIK GULF1

An important recent development in marine seismic data acquisition is the introduction of the Gemini technique (Newman, 1983, Haskey et al., 1983). The technique involves the use of a single Sodera water gun as a reference source together with the conventional air gun or water gun array which is fired a second or two after firing the reference source. The near‐field pressure signature radiated by the reference source is monitored continuously. The main advantage of the Gemini technique is that a shallow high;resolution section is recorded simultaneously with that obtained from the main array.

Download Full-text

THE PALEO-ENVIRONMENTAL SETTING OF SEPETIBA BAY, RIO DE JANEIRO, BRAZIL, IN THE LATE PLEISTOCENE: INTERPRETATIONS FROM HIGH-RESOLUTION SEISMIC STRATIGRAPHY

Brazilian Journal of Geophysics ◽

10.22564/rbgf.v33i4.762 ◽

2015 ◽

Vol 33 (4) ◽

Author(s):

Heloisa Vargas Borges ◽

Charles A. Nittrouer

Keyword(s):

High Resolution ◽

Late Pleistocene ◽

Seismic Data ◽

Rio De Janeiro ◽

Single Channel ◽

Seismic Stratigraphy ◽

Seismic Profiles ◽

Sepetiba Bay ◽

Environmental Setting ◽

Geological Evolution

ABSTRACT. Single-channel high-resolution seismic profiles in Sepetiba Bay, Brazil, were collected to describe the recent geological evolution of this area. The seismic data showed... RESUMO. Perfis sísmicos de alta resolução da Baía de Sepetiba, Brasil, foram coletados com o objetivo de descrever a evolução geológica recente desta área. Os dados sísmicos...

Download Full-text

PC‐based acquisition and processing of high‐resolution marine seismic data

Geophysics ◽

10.1190/1.1444096 ◽

1996 ◽

Vol 61 (6) ◽

pp. 1804-1812 ◽

Cited By ~ 8

Author(s):

Ho‐Young Lee ◽

Byung‐Koo Hyun ◽

Young‐Sae Kong

Keyword(s):

High Resolution ◽

Seismic Data ◽

Spectral Characteristics ◽

Processing System ◽

Band Pass Filter ◽

Pass Filter ◽

Optical Disk Drive ◽

Air Gun ◽

Marine Seismic

We have improved the quality of high‐resolution marine seismic data using a simple PC‐based acquisition and processing system. The system consists of a PC, an A/D converter, and a magneto‐optical disk drive. The system has been designed to acquire single‐channel data at up to 60,000 samples per second and to perform data processing of seismic data by a simple procedure. Test surveys have been carried out off Pohang, southern East Sea of Korea. The seismic systems used for the test were an air gun and a 3.5 kHz sub‐bottom profiling system. Spectral characteristics of the sources were analyzed. Simple digital signal processes which include gain recovery, deconvolution, band‐pass filter, and swell filter were performed. The quality of seismic sections produced by the system is greatly enhanced in comparison to analog sections. The PC‐based system for acquisition and processing of high‐resolution marine seismic data is economical and versatile.

Download Full-text