INSS INFOMAR Seabed Samples Particle Size Analysis

Category: Science
Views: 98
Openness rating:

The INtegrated Mapping FOr the Sustainable Development of Ireland's MArine Resource (INFOMAR) programme is a joint venture between the Geological Survey of Ireland (GSI) and the Marine Institute (MI). The programme is the successor to the Irish National Seabed Survey (INSS) and concentrates on creating integrated mapping products related to the seabed.

INFOMAR Seabed Samples Particle Size Analysis represent locations where samples have been taken and particle size analysis (PSA) carried out on samples.

Sediment type classification based on percentage sand, mud and gravel (after Folk 1954). Every sediment is a mixture of grains of varying sizes. It groups grains into mud, sand and gravel on the basis of their diameter. The relative proportion of the grains in the three categories is then used to describe the sediment and is displayed in a diagram commonly called a “Folk triangle”. This classification has 15 terms to describe the seabed sediments.

Samples from the seabed are taken by grab and box core sampling instruments.

PSA is applied to determine the range of sediment sizes contained in the sample which can often reveal an insight about the processes operating in the depositional environment. The results show percentage gravels, sands, silt and mud present in the sample. This analysis is also used to determine if the sample is well or poorly sorted.

Data Resources (5)

available as shp
available as KML
available as CSV
available as geo+json
available as xml

Data Resource Preview - Download KML

Theme Science
Date released 2013-06-20
Date updated 2021-05-17
Dataset conforms to these standards The INSPIRE Directive or INSPIRE lays down a general framework for a Spatial Data Infrastructure (SDI) for the purposes of European Community environmental policies and policies or activities which may have an impact on the environment.
Rights notes ['Creative Commons Attribution 4.0 International (CC BY 4.0) licence', '\n\nRights (can)\nShare- copy and redistribute the data in any medium or format\nAdapt- remix, transform, and build upon the material for any purpose, even commercially\n\nRequirements (must)\nAttribution- Give appropriate credit, provide a link to the licence, and indicate if changes were made. Do so in any reasonable manner, but not in any way that suggests the license endorses you or your use\nNo additional restrictions - may not apply legal terms or technological measures that legally restrict others from doing anything the license permits\n\nUnder the CC-BY Licence, users must acknowledge the source of the Information in their product or application.\n\nPlease use this specific attribution statement: "Contains Irish Public Sector Data (Geological Survey Ireland & Marine Institute) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence".', 'license']
Update frequency Annual
Language English
Landing page
Geographic coverage in GeoJSON format {"type":"Polygon","coordinates":[[[-17.1, 51.01],[-17.1, 57.1], [-5.1, 57.1], [-5.1, 51.01], [-17.1, 51.01]]]}
Spatial Reference Systems (SRS) WGS 84 (EPSG:4326)
Vertical Extent {"verticalDomainName": "sea level", "minVerticalExtent": "-4600", "maxVerticalExtent": "-20"}
Provenance information Seabed samples are collected and particle size analysis undertaken to ground-truth seabed mapping data acquisition.
Period of time covered (begin) 2000-01-01
Period of time covered (end) 2021-01-19