Seafloor Shear Measurement Using Interface Waves
Abstract
The long term goal of our research is to improve the estimation of bottom properties by understanding and incorporating the effects produced by shear. The objectives of this proposal are to: Develop an acoustic/seismic receive system for the estimation of sediment compressional wave speed, compressional wave attenuation and shear wave speed and develop new inversion techniques for shear properties: A new inversion scheme is being developed to estimate shear properties of the sediment using interface wave dispersion. Figure 1 shows the conceptual schematic of the system. This shear measurement system consists of the following components: 1. Sled: The sled houses the data acquisition system. The sled will be connected to a tow cable with appropriate chain and floatation to isolate the wave motion from the geophone/ hydrophone receive array. The termination of the tow cable at the surface will consist of a float and appropriate mechanical connectors to deploy, move, leave, and recover the system. 2. Acquisition System: Two Several Hydrophone Receive Systems (SHRUs) serve as the data collection system. 3. Receive array: The receive array consists of gimbaled geophones and hydrophones.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 2010
- Accession Number
- ADA542044
Entities
People
- Gopu R. Potty
- James H Miller
Organizations
- University of Rhode Island