Skip to content
GitLab
Projects
Groups
Snippets
Help
Loading...
Help
What's new
10
Help
Support
Community forum
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in
Toggle navigation
Open sidebar
Seitosh
Seitosh
Commits
a29e4932
Commit
a29e4932
authored
May 13, 2015
by
thomas.forbriger
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
[TASK] (issue5lisousi): rework README
parent
773e98cb
Changes
2
Hide whitespace changes
Inline
Side-by-side
Showing
2 changed files
with
15 additions
and
14 deletions
+15
-14
src/ts/lisousi/README
src/ts/lisousi/README
+5
-13
src/ts/lisousi/description_text.txt
src/ts/lisousi/description_text.txt
+10
-1
No files found.
src/ts/lisousi/README
View file @
a29e4932
...
...
@@ -9,7 +9,7 @@ Purpose of lisousi
Line-source simulation: Transform field data to apparent line-source generated
waveforms in preparation for Cartesian 2D full-waveform inversion.
S
hallow s
eismic field data is excited by point sources (e.g. hammer blows).
Seismic field data is excited by point sources (e.g. hammer blows).
Full waveform inversion (FWI) approaches which make use of Cartesian 2D
forward modeling implicitly use a line source to fit the observed data.
Therefore recorded waveforms must be transformed to simulate equivalent
...
...
@@ -27,14 +27,6 @@ approximations, most of them being derived from the acoustic wave Green's
function. Nevertheless, they perform surprisingly well on data from
visco-elastic wave propagation in heterogeneous structures.
For shallow seismic data we recommend a simple but effective procedure:
1. scale waveform by r*sqrt(2) (offset times square root of 2)
2. convolve with 1/sqrt(t) (fractional half integration)
3. taper samples with 1/sqrt(t)
Where r is source-to-receiver offset and t is sample time.
Features
--------
...
...
@@ -73,9 +65,9 @@ Program documentation
See files
usage_text.txt
help_text.txt
description_text.txt
usage_text.txt
for a summary of command line options
help_text.txt
for a description of command line options
description_text.txt
for the theory of operation
for usage information or execute
...
...
@@ -127,7 +119,7 @@ Dependencies:
============================================================================
The home of this software suite is
http://g
p
it
rsvn.gpi.uni-karlsruhe.de:8000/TFSoftware/wiki/trunk
/src/ts/lisousi
http
s
://git
.scc.kit.edu/Seitosh/Seitosh/wikis
/src/ts/lisousi
/lisousi
Please send bug reports and suggestions to
Thomas.Forbriger@kit.edu
...
...
src/ts/lisousi/description_text.txt
View file @
a29e4932
...
...
@@ -9,7 +9,7 @@ Purpose of lisousi
Line-source simulation: Transform field data to apparent line-source generated
waveforms in preparation for Cartesian 2D full-waveform inversion.
S
hallow s
eismic field data is excited by point sources (e.g. hammer blows).
Seismic field data is excited by point sources (e.g. hammer blows).
Full waveform inversion (FWI) approaches which make use of Cartesian 2D
forward modeling implicitly use a line source to fit the observed data.
Therefore recorded waveforms must be transformed to simulate equivalent
...
...
@@ -27,6 +27,15 @@ approximations, most of them being derived from the acoustic wave Green's
function. Nevertheless, they perform surprisingly well on data from
visco-elastic wave propagation in heterogeneous structures.
For shallow seismic data we recommend a simple but effective procedure:
1. scale waveform by r*sqrt(2) (offset times square root of 2)
2. convolve with 1/sqrt(t) (fractional half integration)
3. taper samples with 1/sqrt(t)
Where r is source-to-receiver offset and t is sample time.
We call this "direct-wave transformation".
Theory of operation
===================
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
.
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment