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NEFSC Metadata Library > Population and Ecosystems Monitoring and Analys... > Ecosystems Surveys Branch > Fisheries Acoustic Research Program > Acoustics Research >

BI500_Vlog

Entity (ENT) | Northeast Fisheries Science Center (NEFSC)
GUID: gov.noaa.nmfs.inport:56969 | Updated: August 9, 2022 | Published / External

Summary

Item Identification

Data Attributes

Catalog Details

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 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.

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

PelagicCount
Long

PelagicOffset
Long

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

BottomCount
Long

BottomOffset
Long

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.

No Child Items for this record.

No contact information is available for this record.

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

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.

Attribute Summary

	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.

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

100

PelagicLower

Float

100

PelagicCount

Long

100

PelagicOffset

Long

100

BottomUpper

Float

100

BottomLower

Float

100

BottomCount

Long

100

BottomOffset

Long

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 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

BI500_Vlog

Summary

Entity Information

Child Items

Contact Information

Item Identification

Data Attributes

Attribute Summary

Attribute Details

Date

Time

Distance

Latitude

Longitude

BottomDepth

EchogramType

PelagicUpper

PelagicLower

PelagicCount

PelagicOffset

BottomUpper

BottomLower

BottomCount

BottomOffset

EchotraceCount

EchotraceOffset

Catalog Details