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OCM Metadata Library > Benthic > Hudson River Sub_Bottom Profile Data - Raw SEG-... >

SEG-Y headers

Entity (ENT)  |  Office for Coastal Management (OCM)
GUID: gov.noaa.nmfs.inport:49330  |  Updated: August 9, 2022  |  Published / External 
Summary
Item Identification
Data Attributes
Catalog Details

Summary

Abstract

32-bit integer SEG-Y data format | Description Source: Fugro

Entity Information

Data Attribute / Type Description
bytes_1_4
Unknown 		trace sequence number | Description Source: Fugro
bytes_17_20
Unknown 		shotpoint number | Description Source: Fugro
bytes_37_40
NUMBER 		distance from source point to receiver group | Description Source: Fugro
bytes_49_52
NUMBER 		source depth below surface | Description Source: Fugro
bytes_61_64
Unknown 		water depth at source (meters) | Description Source: Fugro
bytes_73_76
Unknown 		source x-coordinate (easting UTM WGS84 Zone 18N) | Description Source: Fugro
bytes_77_80
Unknown 		source Y-coordinate (northing UTM WGS84 Zone 18N) | Description Source: Fugro
bytes_115_116
Unknown 		number of samples in this trace | Description Source: Fugro
bytes_117_118
NUMBER 		sample interval in microseconds for this trace | Description Source: Fugro
bytes_121_122
NUMBER 		instrument gain | Description Source: Fugro
bytes_127_128
NUMBER 		sweep frequency at start | Description Source: Fugro
bytes_129_130
NUMBER 		sweep frequency at end | Description Source: Fugro
bytes_131_132
NUMBER 		sweep length in microseconds | Description Source: Fugro
bytes_141_142
NUMBER 		alias filter | Description Source: Fugro
bytes_157_158
NUMBER 		Year data recorded | Description Source: Fugro
bytes_159_160
Unknown 		day of year | Description Source: Fugro
bytes_161_162
Unknown 		hour of day | Description Source: Fugro
bytes_163_164
Unknown 		minute of hour | Description Source: Fugro
bytes_165_166
Unknown 		second of minute | Description Source: Fugro
bytes_167_168
NUMBER 		time basis code (1-local, 2-GMT, 3-other) | Description Source: Fugro

Child Items

No Child Items for this record.

Contact Information

No contact information is available for this record.

Please contact the owner organization (OCM) for inquiries on this record.

Item Identification

Title: SEG-Y headers
Short Name: SEG-Y headers
Status: Completed
Abstract:

32-bit integer SEG-Y data format | Description Source: Fugro
Notes:

Converted from FGDC using 'fgdc_to_inport_xml_entity.pl' script.

Data Attributes

Attribute Summary

Rubric Score Primary Key? Name Type Description
100
 bytes_1_4 Unknown trace sequence number | Description Source: Fugro
100
 bytes_17_20 Unknown shotpoint number | Description Source: Fugro
100
 bytes_37_40 NUMBER distance from source point to receiver group | Description Source: Fugro
100
 bytes_49_52 NUMBER source depth below surface | Description Source: Fugro
100
 bytes_61_64 Unknown water depth at source (meters) | Description Source: Fugro
100
 bytes_73_76 Unknown source x-coordinate (easting UTM WGS84 Zone 18N) | Description Source: Fugro
100
 bytes_77_80 Unknown source Y-coordinate (northing UTM WGS84 Zone 18N) | Description Source: Fugro
100
 bytes_115_116 Unknown number of samples in this trace | Description Source: Fugro
100
 bytes_117_118 NUMBER sample interval in microseconds for this trace | Description Source: Fugro
100
 bytes_121_122 NUMBER instrument gain | Description Source: Fugro
100
 bytes_127_128 NUMBER sweep frequency at start | Description Source: Fugro
100
 bytes_129_130 NUMBER sweep frequency at end | Description Source: Fugro
100
 bytes_131_132 NUMBER sweep length in microseconds | Description Source: Fugro
100
 bytes_141_142 NUMBER alias filter | Description Source: Fugro
100
 bytes_157_158 NUMBER Year data recorded | Description Source: Fugro
100
 bytes_159_160 Unknown day of year | Description Source: Fugro
100
 bytes_161_162 Unknown hour of day | Description Source: Fugro
100
 bytes_163_164 Unknown minute of hour | Description Source: Fugro
100
 bytes_165_166 Unknown second of minute | Description Source: Fugro
100
 bytes_167_168 NUMBER time basis code (1-local, 2-GMT, 3-other) | Description Source: Fugro

Attribute Details

bytes_1_4

CC ID: 659823
Seq. Order: 1
Data Storage Type: Unknown
Required: No
Primary Key: No
Status: Active
Description:

trace sequence number | Description Source: Fugro
Allowed Values: Varies per line

bytes_17_20

CC ID: 659824
Seq. Order: 2
Data Storage Type: Unknown
Required: No
Primary Key: No
Status: Active
Description:

shotpoint number | Description Source: Fugro
Allowed Values: Varies per line

bytes_37_40

CC ID: 659825
Seq. Order: 3
Data Storage Type: NUMBER
Required: No
Primary Key: No
Status: Active
Description:

distance from source point to receiver group | Description Source: Fugro
Unit of Measure: meter
Allowed Values: 0 - 0

bytes_49_52

CC ID: 659826
Seq. Order: 4
Data Storage Type: NUMBER
Required: No
Primary Key: No
Status: Active
Description:

source depth below surface | Description Source: Fugro
Unit of Measure: meter
Allowed Values: 1 - 1

bytes_61_64

CC ID: 659827
Seq. Order: 5
Data Storage Type: Unknown
Required: No
Primary Key: No
Status: Active
Description:

water depth at source (meters) | Description Source: Fugro
Allowed Values: Varies per line

bytes_73_76

CC ID: 659828
Seq. Order: 6
Data Storage Type: Unknown
Required: No
Primary Key: No
Status: Active
Description:

source x-coordinate (easting UTM WGS84 Zone 18N) | Description Source: Fugro
Allowed Values: Varies per line

bytes_77_80

CC ID: 659829
Seq. Order: 7
Data Storage Type: Unknown
Required: No
Primary Key: No
Status: Active
Description:

source Y-coordinate (northing UTM WGS84 Zone 18N) | Description Source: Fugro
Allowed Values: Varies per line

bytes_115_116

CC ID: 659830
Seq. Order: 8
Data Storage Type: Unknown
Required: No
Primary Key: No
Status: Active
Description:

number of samples in this trace | Description Source: Fugro
Allowed Values: Varies per line

bytes_117_118

CC ID: 659831
Seq. Order: 9
Data Storage Type: NUMBER
Required: No
Primary Key: No
Status: Active
Description:

sample interval in microseconds for this trace | Description Source: Fugro
Unit of Measure: microseconds
Allowed Values: 40 - 40

bytes_121_122

CC ID: 659832
Seq. Order: 10
Data Storage Type: NUMBER
Required: No
Primary Key: No
Status: Active
Description:

instrument gain | Description Source: Fugro
Allowed Values: 0 - 0

bytes_127_128

CC ID: 659833
Seq. Order: 11
Data Storage Type: NUMBER
Required: No
Primary Key: No
Status: Active
Description:

sweep frequency at start | Description Source: Fugro
Unit of Measure: kHz
Allowed Values: 2 - 2

bytes_129_130

CC ID: 659834
Seq. Order: 12
Data Storage Type: NUMBER
Required: No
Primary Key: No
Status: Active
Description:

sweep frequency at end | Description Source: Fugro
Unit of Measure: kHz
Allowed Values: 16 - 16

bytes_131_132

CC ID: 659835
Seq. Order: 13
Data Storage Type: NUMBER
Required: No
Primary Key: No
Status: Active
Description:

sweep length in microseconds | Description Source: Fugro
Unit of Measure: microseconds
Allowed Values: 20 - 20

bytes_141_142

CC ID: 659836
Seq. Order: 14
Data Storage Type: NUMBER
Required: No
Primary Key: No
Status: Active
Description:

alias filter | Description Source: Fugro
Unit of Measure: kHz
Allowed Values: 12.5 - 12.5

bytes_157_158

CC ID: 659837
Seq. Order: 15
Data Storage Type: NUMBER
Required: No
Primary Key: No
Status: Active
Description:

Year data recorded | Description Source: Fugro
Allowed Values: 2009 - 2009

bytes_159_160

CC ID: 659838
Seq. Order: 16
Data Storage Type: Unknown
Required: No
Primary Key: No
Status: Active
Description:

day of year | Description Source: Fugro
Allowed Values: Varies per line

bytes_161_162

CC ID: 659839
Seq. Order: 17
Data Storage Type: Unknown
Required: No
Primary Key: No
Status: Active
Description:

hour of day | Description Source: Fugro
Allowed Values: Varies per line

bytes_163_164

CC ID: 659840
Seq. Order: 18
Data Storage Type: Unknown
Required: No
Primary Key: No
Status: Active
Description:

minute of hour | Description Source: Fugro
Allowed Values: Varies per line. This value is recorded to the SEG-Y file header from the Sub bottom profiler PC clock which was offset from GPS time (as collected by the side scan sonar system).

bytes_165_166

CC ID: 659841
Seq. Order: 19
Data Storage Type: Unknown
Required: No
Primary Key: No
Status: Active
Description:

second of minute | Description Source: Fugro
Allowed Values: Varies per line. This value is recorded to the SEG-Y file header from the Sub bottom profiler PC clock which was offset from GPS time (as collected by the side scan sonar system).

bytes_167_168

CC ID: 659842
Seq. Order: 20
Data Storage Type: NUMBER
Required: No
Primary Key: No
Status: Active
Description:

time basis code (1-local, 2-GMT, 3-other) | Description Source: Fugro
Allowed Values: 3 - 3

Catalog Details

Catalog Item ID: 49330
GUID: gov.noaa.nmfs.inport:49330
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-15 08:31+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2017-11-16
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2017-11-16
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2018-11-16