INFOMAR Sub-bottom Profile

A Sub-bottom profile aims to identify and characterise layers of sediment or rock under the seabed. These systems also can be helpful in locating hard objects buried beneath the seabed shallow sediment layers. In sub-bottom profiling, a sound source directs a pulse toward the seabed. Parts of this sound pulse reflect off of the seabed, while other parts penetrate the seabed. The portions of the sound pulse that penetrate the seabed are both reflected and refracted as they pass into different layers of sediment. Sub-bottom profile data can be collected by 2 systems a Pinger, a Chirp system or a Sparker system. The Pinger/Chirp systems operate in a similar way to the SBES but at lower frequencies. A pinger system transmits a single frequency (~4 kHz) while the chirp system transmits a sweep of frequencies (e.g. 2-7 kHz) in a single pulse. The sound penetrates the seabed and reflects off boundaries where there are changes in the sediment properties (e.g. mud-sand transitions). The depth of penetration into the subsurface is dependent on the type of sediment. The Sparker system is used sub-seabed investigations where deeper penetration is required or coarse/ compacted sediments dominate. Operating at lower frequencies (500 – 2000 Hz) the unit is towed behind the vessel, transmitting a more powerful pulse of sound into the seabed. None

Simple

Date (Publication)
2017-11-09
Date (Revision)
2023-11-28
Date (Creation)
2017-11-09
Citation identifier
ie.marine.data:dataset.862
Point of contact
Organisation name Individual name Electronic mail address Role

Geological Survey Ireland

Duty.Geologist@gsi.ie

Originator
Maintenance and update frequency
As needed
OGC Simple Feature Types
SeaDataNet Parameter Discovery Vocabulary
Marine Institute Dataset Communities
Use limitation

While every effort is made in preparing the dataset no responsibility is accepted by or on behalf of the Marine Institute for any errors, omissions or misleading information. The Marine Institute accepts no responsibility for loss or damage occasioned or claimed to have been occasioned, in part or in full, as a consequence of any person acting, or refraining from acting as a result of a matter contained in this datasets or as a consequence of using this dataset for any purpose whatsoever.

Use limitation

A Creative Commons (CC) license is one of several public copyright licenses that enable the free distribution of an otherwise copyrighted work. A CC license is used when an author wants to give people the right to share, use, and build upon a work that they have created. Under Creative Commons CC BY 4.0 the following is granted: Rights Share — copy and redistribute the material in any medium or format; Adapt — remix, transform, and build upon the material for any purpose, even commercially. The licensor cannot revoke these freedoms as long as you follow the license terms. Requirements Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

Access constraints
CC%20BY%204.0
Aggregate Datasetindentifier
ie.marine.data:dataset.855
Association Type
Cross reference
Initiative Type
Mission
Aggregate Datasetindentifier
ie.marine.data:dataset.886
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Cross reference
Initiative Type
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Aggregate Datasetindentifier
ie.marine.data:dataset.912
Association Type
Cross reference
Initiative Type
Mission
Aggregate Datasetindentifier
ie.marine.data:dataset.932
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Cross reference
Initiative Type
Mission
Aggregate Datasetindentifier
ie.marine.data:dataset.936
Association Type
Cross reference
Initiative Type
Mission
Aggregate Datasetindentifier
ie.marine.data:dataset.965
Association Type
Cross reference
Initiative Type
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Aggregate Datasetindentifier
ie.marine.data:dataset.1024
Association Type
Cross reference
Initiative Type
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Aggregate Datasetindentifier
ie.marine.data:dataset.1030
Association Type
Cross reference
Initiative Type
Mission
Aggregate Datasetindentifier
ie.marine.data:dataset.1422
Association Type
Cross reference
Initiative Type
Mission
Aggregate Datasetindentifier
ie.marine.data:dataset.1473
Association Type
Cross reference
Initiative Type
Mission
Aggregate Datasetindentifier
ie.marine.data:dataset.1581
Association Type
Cross reference
Initiative Type
Mission
Aggregate Datasetindentifier
ie.marine.data:dataset.1907
Association Type
Cross reference
Initiative Type
Mission
Aggregate Datasetindentifier
ie.marine.data:dataset.1928
Association Type
Cross reference
Initiative Type
Mission
Aggregate Datasetindentifier
ie.marine.data:dataset.1948
Association Type
Cross reference
Initiative Type
Mission
Aggregate Datasetindentifier
ie.marine.data:dataset.2039
Association Type
Cross reference
Initiative Type
Mission
Spatial representation type
Vector
Language
English
Begin date
1996-01-01
End date
..
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S
E
W
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Reference system identifier
INSPIRE RS registry / http://www.opengis.net/def/crs/EPSG/0/3857
Distribution format
Name Version

HTML
OnLine resource
Protocol Linkage Name

WWW:DOWNLOAD-1.0-http--download

 		https://www.infomar.ie/maps/interactive-maps/data-and-sub-bottom-profiler-viewer

HTML
OnLine resource
Protocol Linkage Name

WWW:LINK-1.0-http--link

 		http://www.gsi.ie/
OnLine resource
Protocol Linkage Name

WWW:LINK-1.0-http--link

 		http://www.infomar.ie/
Hierarchy level
Dataset

Conformance result

Title

Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date (Publication)
2010-12-08
Explanation

See the referenced specification
Pass
Yes
Statement

Data supplied by Marine Institute.

Metadata

File identifier
ie.marine.data:dataset.862 XML
Metadata language
English
Hierarchy level
Dataset
Date stamp
2023-11-28
Metadata standard name

ISDI Metadata Profile
Metadata standard version

1.2
Metadata author
Organisation name Individual name Electronic mail address Role

Marine Institute

datarequests@marine.ie

Point of contact
 
 

Overviews

overview

Spatial extent

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Keywords



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