USGS - science for a changing world

Data Series 1047


Digitized Analog Boomer Seismic-Reflection Data Collected During U.S. Geological Survey Cruises Erda 90-1_HC, Erda 90-1_PBP, and Erda 91-3 in Mississippi Sound, June 1990 and September 1991

Skip Links

Citation Page
Abstract
Introduction
Survey Overview
Data Acquisition
Data Processing
Data Downloads
Abbreviations
References Cited
 

Data Acquisition

A Huntec sled and ORE Geopulse power supply (fig. 5) accompanied by a Benthos hydrophone receiver was used during the Erda 90-1 cruise to collect the seismic profiles. The analog boomer data were plotted in real time using an electrostatic plotter. The paper printouts were annotated with shot number, time, environmental conditions, and equipment status. The fire and sweep rate for each line segment was 250 ms and 125 ms, respectively, with a sample rate of 0.2 to 1.4 ms. Navigation data (latitude and longitude) were recorded using a LORAN navigation system and exported as an ASCII text file. The Erda 91-3 geophysical cruise used the same equipment setup as both the 90-1 cruises; however, the sample rate for this survey was 0.3 to 3 ms. The vessel traveled at a speed of about 4 knots (kts) during data acquisition. For each cruise, additional information related to environmental conditions, equipment operation, and trackline details were written into a field logbook. These logs can be accessed from Bosse and others (2017).

Seismic profiling system and its components.
Figure 5.  Seismic profiling system and its components. A, transmitter; B, hydrophone receiver; C, power supply; D, electrostatic plotter; and E, processing computer. Photograph from Kindinger and others (1997). [Click figure to enlarge]

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://pubsdata.usgs.gov/pubs/ds/1047/ds1047_data-aquisition.html
Page Contact Information: GS Pubs Web Contact
Page Last Modified: Monday, 17-Apr-2017 16:54:10 EDT