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Western Coastal & Marine Geology

Coastal and Seafloor Mapping

Mapping Systems

Surficial and Sub-bottom Systems:
Seismic Reflection Systems

A diverse array of seismic-reflection systems enables flexibility to address a wide-range of scientific objectives.

High Resolution,
Shallow Penetration
Systems

 Edgetech chirp
Edgetech (chirp)
0.5 - 12 kHz		 High-resolution Chirp
Example of a high-resolution chirp image
Edgetech chirp
Edgetech (chirp)
4 - 24 kHz
sparker
Sparker
50 Hz - 4 kHz
huntec
Huntec Boomer Sled
300 Hz - 3 kHz

Lower Resolution,
Deep Penetration
Systems

 water gun
Water Gun
20 - 1500 Hz
Example of a multichannel seismic image

 

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URL: http://walrus.wr.usgs.gov/mapping/seis.html
Page Contact Information: Laura Zink Torresan
Page Last Modified: 12 June 2009 (lzt)