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Summary
Item Identification
Data Attributes
Catalog Details

Summary

Abstract

Log based index file. Index pointers to the three most recent data blocks in the Data file are written into the Vlog file every time a vessel log (VL) telegram arrives from the EK500.

Entity Information

Data Attribute / Type Description
Date
Long
Date and time of the ping. See the Observation table.
Time
Long
Date and time of the ping. See the Observation table.
Distance
Float
Current vessel log distance, current geographical position and current bottom depth.
Latitude
Float
Current vessel log distance, current geographical position and current bottom depth.
Longitude
Float
Current vessel log distance, current geographical position and current bottom depth.
BottomDepth
Float
Current vessel log distance, current geographical position and current bottom depth.
EchogramType
Long
This parameter identifies the echogram data type: 0 = volume backscattering strength, 1 = 1 target strength, 2 = 2 surface backscattering strength
PelagicUpper
Float
Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface.
PelagicLower
Float
Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface.
PelagicCount
Long
Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface.
PelagicOffset
Long
Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface.
BottomUpper
Float
Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom.
BottomLower
Float
Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom.
BottomCount
Long
Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom.
BottomOffset
Long
Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom.
EchotraceCount
Long
Parameters characterizing the echotrace block; number of echotraces, data block start address in bytes within the Data file.
EchotraceOffset
Long
Parameters characterizing the echotrace block; number of echotraces, data block start address in bytes within the Data file.

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Item Identification

Title: BI500_Vlog
Short Name: BI500_Vlog
Status: Completed
Abstract:

Log based index file. Index pointers to the three most recent data blocks in the Data file are written into the Vlog file every time a vessel log (VL) telegram arrives from the EK500.

Data Attributes

Attribute Summary

Rubric Score Primary Key? Name Type Description
100
Date Long Date and time of the ping. See the Observation table.
100
Time Long Date and time of the ping. See the Observation table.
100
Distance Float Current vessel log distance, current geographical position and current bottom depth.
100
Latitude Float Current vessel log distance, current geographical position and current bottom depth.
100
Longitude Float Current vessel log distance, current geographical position and current bottom depth.
100
BottomDepth Float Current vessel log distance, current geographical position and current bottom depth.
100
EchogramType Long This parameter identifies the echogram data type: 0 = volume backscattering strength, 1 = 1 target strength, 2 = 2 surface backscattering strength
100
PelagicUpper Float Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface.
100
PelagicLower Float Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface.
100
PelagicCount Long Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface.
100
PelagicOffset Long Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface.
100
BottomUpper Float Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom.
100
BottomLower Float Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom.
100
BottomCount Long Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom.
100
BottomOffset Long Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom.
100
EchotraceCount Long Parameters characterizing the echotrace block; number of echotraces, data block start address in bytes within the Data file.
100
EchotraceOffset Long Parameters characterizing the echotrace block; number of echotraces, data block start address in bytes within the Data file.

Attribute Details

Date

CC ID: 863721
Data Storage Type: Long
Required: No
Primary Key: No
Status: Active
Description:

Date and time of the ping. See the Observation table.

Time

CC ID: 863722
Data Storage Type: Long
Required: No
Primary Key: No
Status: Active
Description:

Date and time of the ping. See the Observation table.

Distance

CC ID: 863723
Data Storage Type: Float
Required: No
Primary Key: No
Status: Active
Description:

Current vessel log distance, current geographical position and current bottom depth.

Latitude

CC ID: 863724
Data Storage Type: Float
Required: No
Primary Key: No
Status: Active
Description:

Current vessel log distance, current geographical position and current bottom depth.

Longitude

CC ID: 863725
Data Storage Type: Float
Required: No
Primary Key: No
Status: Active
Description:

Current vessel log distance, current geographical position and current bottom depth.

BottomDepth

CC ID: 863726
Data Storage Type: Float
Required: No
Primary Key: No
Status: Active
Description:

Current vessel log distance, current geographical position and current bottom depth.

EchogramType

CC ID: 863727
Data Storage Type: Long
Required: No
Primary Key: No
Status: Active
Description:

This parameter identifies the echogram data type: 0 = volume backscattering strength, 1 = 1 target strength, 2 = 2 surface backscattering strength

PelagicUpper

CC ID: 863728
Data Storage Type: Float
Required: No
Primary Key: No
Status: Active
Description:

Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface.

PelagicLower

CC ID: 863729
Data Storage Type: Float
Required: No
Primary Key: No
Status: Active
Description:

Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface.

PelagicCount

CC ID: 863730
Data Storage Type: Long
Required: No
Primary Key: No
Status: Active
Description:

Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface.

PelagicOffset

CC ID: 863741
Data Storage Type: Long
Required: No
Primary Key: No
Status: Active
Description:

Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface.

BottomUpper

CC ID: 863742
Data Storage Type: Float
Required: No
Primary Key: No
Status: Active
Description:

Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom.

BottomLower

CC ID: 863743
Data Storage Type: Float
Required: No
Primary Key: No
Status: Active
Description:

Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom.

BottomCount

CC ID: 863744
Data Storage Type: Long
Required: No
Primary Key: No
Status: Active
Description:

Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom.

BottomOffset

CC ID: 863745
Data Storage Type: Long
Required: No
Primary Key: No
Status: Active
Description:

Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom.

EchotraceCount

CC ID: 863761
Data Storage Type: Long
Required: No
Primary Key: No
Status: Active
Description:

Parameters characterizing the echotrace block; number of echotraces, data block start address in bytes within the Data file.

EchotraceOffset

CC ID: 863762
Data Storage Type: Long
Required: No
Primary Key: No
Status: Active
Description:

Parameters characterizing the echotrace block; number of echotraces, data block start address in bytes within the Data file.

Catalog Details

Catalog Item ID: 56969
GUID: gov.noaa.nmfs.inport:56969
Metadata Record Created By: Patricia L Jones
Metadata Record Created: 2019-07-18 13:00+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2019-07-18
Owner Org: NEFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2019-07-18
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2020-07-18