SEG-Y headers
Entity (ENT) | Office for Coastal Management (OCM)GUID: gov.noaa.nmfs.inport:49330 | Updated: August 9, 2022 | Published / External
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
|
|
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 |