Using inverse theory and seabeam bathymetry to improve seismic refraction data corrections

1988 ◽  
Vol 9 (4) ◽  
pp. 311-332 ◽  
Author(s):  
M. Poujol ◽  
R. S. Jacobson
Keyword(s):  
Seismic Refraction ◽  
Inverse Theory ◽  
Seismic Refraction Data ◽  
Refraction Data

Linear inversion of body wave data—Part II: Attenuation versus depth using spectral ratios

Geophysics ◽  
1981 ◽  
Vol 46 (2) ◽  
pp. 152-162 ◽  
Author(s):  
R. S. Jacobson ◽  
George G. Shor ◽  
LeRoy M. Dorman
Keyword(s):  
Body Wave ◽  
Seismic Refraction ◽  
Inverse Theory ◽  
Source Spectrum ◽  
Spectral Ratios ◽  
Linear Inversion ◽  
Source Signal ◽  
Seismic Refraction Data ◽  
Refraction Data ◽  
Preferred Solutions

We present a method for determining the specific quality factor [Formula: see text] by the use of spectral ratios of seismic refraction data. The only modifications to standard refraction profiles are that the source and receivers be sufficiently far away from reflective boundaries to eliminate the angular dependence of the source spectrum itself and of the observation of the source signal by the receiver. The last requirement may not be too significant. Application of this method for determining attenuation as a function of depth was applied to data obtained in a thick sedimentary section in the Bay of Bengal. Once an adequate velocity‐depth function is determined, attenuation as a function of depth is readily calculated by the use of linear inverse theory. Several preferred solutions are discussed, including a model of constant [Formula: see text] of 0.0115. A comparison of our data with a compilation of data from the published literature of attenuation with depth reveals a reasonable concordance, but with some slight differences. A peak of attenuation at 600-m depth probably represents the depth of lithification of the sediments into mudstone.

scholarly journals Utilization of seismic refraction data for the study of structure of Bang hot-water source, Le Thuy, Quang Binh

2016 ◽  
Vol 38 (4) ◽  
Author(s):  
Tran Anh Vu* ◽  
Dinh Van Toan ◽  
Doan Van Tuyen ◽  
Lai Hop Phong ◽  
Duong Thi Ninh ◽  
...  
Keyword(s):  
Seismic Refraction ◽  
Water Source ◽  
Hot Water ◽  
Seismic Refraction Data ◽  
Refraction Data

scholarly journals Detailed shallow structure seismic refraction investigation, with the application of different processing techniques

2001 ◽  
Vol 34 (4) ◽  
pp. 1309
Author(s):  
Τ. ΠΑΠΑΔΟΠΟΥΛΟΣ ◽  
Π. ΚΑΜΠΟΥΡΗΣ ◽  
Ι. ΑΛΕΞΟΠΟΥΛΟΣ
Keyword(s):  
Seismic Velocity ◽  
Seismic Refraction ◽  
Seismic Sources ◽  
Subsurface Structure ◽  
Seismic Refraction Data ◽  
Processing Techniques ◽  
National Road ◽  
Gradual Variation ◽  
Refraction Data ◽  
Shallow Structure

A comparative study of conventional and modern processing techniques of seismic refraction data is examined in this paper, for shallow structure investigation in the framework of a geotechnical research. The techniques used here were applied for the detection of narrow and low seismic velocity zones along the bedrock in the 10.5th Km of the new national road Igoumenitsa-Ioannina. The results were comparable and only slight deviations were observed due mainly to different algorithm procedures applied on data and the resolution provided by each technique. It is pointed out that the non linear tomography seismic refraction technique, overcomes the conventional ones since by increasing the number of seismic sources and considering the gradual variation of seismic velocity with depth, a better resolution and image reconstruction for the subsurface structure is obtained.

Refrapy: A Python program for seismic refraction data analysis

2022 ◽  
Vol 159 ◽  
pp. 105020
Author(s):  
Victor José Cavalcanti Bezerra Guedes ◽  
Susanne Taina Ramalho Maciel ◽  
Marcelo Peres Rocha
Keyword(s):  
Data Analysis ◽  
Seismic Refraction ◽  
Seismic Refraction Data ◽  
Refraction Data
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