sub-bottom-profile-sbp-tracklines-inshore-ireland-wgs84
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| Téama | Eolaíocht |
|---|---|
| Dáta eisithe | 2013-06-20 |
| Dáta nuashonraithe | 2021-03-09 |
| Cloíonn an tacar sonraí leis na caighdeáin seo | 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. |
| Nótaí Cearta | Data that is produced directly by the Geological Survey Ireland (GSI) and the Marine Institute (MI) is free for use under the conditions of Creative Commons Attribution 4.0 International license. https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/legalcode Under the CC-BY Licence, users must acknowledge the source of the Information in their product or application. Please 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". In cases where it is not practical to use the statement users may include a URI or hyperlink to a resource that contains the required attribution statement. |
| Minicíocht Nuashonraithe | Annual |
| Teanga | English |
| Clúdach Geografach i bhformáid GeoJSON | {"type":"Polygon","coordinates":[[[-17.1, 50.1],[-17.1, 57.1], [-5.01, 57.1], [-5.01, 50.1], [-17.1, 50.1]]]} |
| SRS | WGS 84 (EPSG:4326) |
| Méid Ingearach | {"maxVerticalExtent": "-1", "verticalDomainName": "sea level", "minVerticalExtent": "-5000"} |
| Eolas Dualfhoinse | Sub-bottom data is collected by a vessel while it is out at sea. It is collected in lines. These lines are also referred to as tracklines. The name of the collection instrument is called a Sub-bottom profiler. The Sub-bottom raw data is returned to our main office for final storage. It is also converted into .SEG-Y format. The SEG-Y files are then imported into FME software. In FME the tracklines of their location are produced. The tracklines are reprojected to WGS84 geographic coordinate system. The following workflow in FME are applied to produce the tracklines: 1. Individual SEG-Y files imported into the SEG-Y reader tool 2. A vertex creator then plots the individual trace elements for each SEG-Y file. 3. The plots are then joined and converted to a polyline feature. 4. All the polyline features for the leg are combined to create a merged survey leg trackline product. The Sub-bottom data is then archived into a .Tar file and made available for download via a hyperlink. In 2021, the data structure was reviewed and a new database was created in ArcGIS Enterprise. Using ArcGIS Pro 2.6.3, the dataset was renamed as part of a GSI data standardisation process. A standardised dataset alias was added. A unique id field was added. A new unique identifier was added for each record using an attribute rule. All existing attributes and the geometry were checked. Attribute errors were corrected. Metadata was updated to new GSI standard based on INSPIRE and ISO standards. |
| Tréimhse ama clúdaithe (tús) | 2003-06-02 |
| Tréimhse ama clúdaithe (deireadh) | 2005-12-31 |
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