Seismic Reflection Results from the Gyre 1997 Cruise at the Bryant Canyon of the Louisiana Gulf Coast

The original SEG-Y files were acquired from David C. Twichell on CD-ROM.
Flow 1 : load file and geometry
2D Marine geometry spreadsheet
Seg-Y Input
File to input: Raw.seg-y
Store Processing History:Yes
Input Auxiliary Traces: Yes
Get Channel Number from Trace Headers: Yes
Input Trace Format: Get from Headers
Display ensemble Formation: No
Data Input Sample Rate: 0.5 msec
Maximum Time to input: variable
Is this Stacked Data: No
Max Traces Per Ensemble: 120
Primary Sort Header Word: SHOT
Input Primary Selection Choice:Input all
Input secondary selection Choice:None
Input global XY coordinates: No
Use coordinate Scalar: Yes
Remap Seg-Y header Values: No
Inline Geometry header Load
water velocity: 1525
Primary header to match database: FFID
Secondary Header to match database: None
Match by Valid trace Number: NO
Drop traces with Null CDP headers: No
Drop Traces with Null receiver Headers: No
Verbose Diagnostics: YES
Trace header Math
select Mode:fixed equation Mode
define header equation:FFID =CDP
Disk Data Output
output dataset file Name: geom
New or existing file:New
record length to output:0(default parameter means include all)
Trace sample format:16 bit
Skip primary disk storage:No
Flow 2: Mute and Deconvolution
Disk Data Input
Read data from other lines/surveys:No
Select input file: geom
Trace read option: Get all
Read data multiple times: No
Input trace headers only: No
Override input datas sample interval:No
Trace Muting
Reapply Previous mutes: no
Mute time reference:Time 0
Type of Mute: TOP
Starting ramp:30
Extrapolate mute times:No
Get Mute Times from Database:Yes
Select Database:Topmute(Horizon picked ~300 ms above seafloor)
True Amplitude recovery
Apply spherical divergence corrections: NO
Apply inelastic attenuation correction: NO
Apply db/sec corrections:YES
DB per second constant:6
Apply time raise to a power corrections:NO
Time power constant:NO
Apply effect to data or remove function:APPLY
Maximum application Time: 3500-4000
Spiking Predictive decon
Type of deconvolution:MIN PHASE SPIKING
Decon Operator length:80
Operator white noise level:.1
window rejection length:2
Time gate reference:DATABASE FILE
Select decon gate from Database: Yes Select database:DECON
Output traces or filters:TRACES
Apply a band pass filter after decon:NO
Reapply mutes after decon:YES
Disk Data Output
Output dataset file Name:decon
New or existing file:New
record length to output:0(default parameter means include all)
Trace sample format:16 bit
Skip primary disk storage:No
Flow 3 Stack
Disk Data Input
Read data from other lines/surveys: No
Select input file:decon
Trace read option:sort
Primary Sort header word:CDP
Secondary sort header word:NONE
Sort order dataset:*/
Presort in memory or disk:Memory
Read data multiple times:No
Input trace headers only: No
Override input datas sample interval:No
CDP Ensemble Stack
sort order of input ensembles:CDP
Method of trace summing:Mean
root Power scalar for stack normalization:0.5
Apply final datum statics after Stack:Yes
Has NMO been applied:No
Disk Data Output
Output dataset file Name:stack
New or existing file:New
record length to output:0(default parameter means include all)
Trace sample format:16 bit
Skip primary disk storage:No
Disk Data Input
Read data from other lines/surveys:No
Select input file:stack
Trace read option:get all
Read data multiple times:No
Input trace headers only:No
Override input data's sample interval:No
Bandpass Filter
Type of Filter:single filter
Type of filter specification:ormsby bandpass
Phase of filter:Zero
domain of filter application:Frequency
Percent zero padding for FFT:25
Apply notch filter:no
Ormbsby bandpass filter values:4-8-100-150
Reapply trace mute after filter:yes
Seg-Y Output
type of seg-y:standard
file name:line1pro.sgy
Retrieve history form header:yes
copy reel header:default
job id for binary header:9999
line number for binary header:9999
desired trace format:4 bit integer
maximum time to output:variable
remap seg-y header values:no

Add the larger work citation to incorporate all the authors. Fixed errors flagged by MP, which results in "information not available from original metadata" in some instances. Added the field activity to the supplemental information. Added USGS Thesaurus and ISO 19115 Topic Category theme keywords. Removed the source citation information - and moved the brief information to the first process step. Removed empty, non-required fields. Updated the distribution information. Modified the distribution information to include the data formats and links to the data. The metadata date (19970408), but not the contact (except email and contact instructions) was updated. The metadata available from a harvester may supersede metadata available from the publication. Compare the metadata dates to determine which metadata file is most recent.

Added keywords section with USGS persistent identifier as theme keyword.