geoscientificInformation
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<p>This dataset includes the data used in in the HELCOM/OSPAR Ballast Water Exemptions Decision Support Tool. This tool was developed in 2013 based on the overall IMO framework, the 21 Baltic and North-East Atlantic coastal states and the EU. It allows user to define 'low risk' routes, as well as other necessary steps in granting exemptions under regulation A-4 of the IMO Ballast Water Management Convention (BWM</p>
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Channel landscape features subdivided where possible into open tunnel valley, open fluvial channel, open tidal channel, tidal inlet, buried fluvial channel, buried tunnel valley, or buried tidal channel. Chronological information is presented as calendar age BP. Confidence is defined as follows: 1. High: Sampled feature with good age and palaeoenvironmental control. 2. Sampled feature with poor or none age and palaeoenvironmental control. 3. Constructed by remote sensing data only. 4. Low: Reasonable without any direct evidence.
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The work package aimed to compile and harmonise available information on submerged landscape features by integrating existing records of palaeoenvironmental indicators with interpretations of geomorphology, stratigraphy and type of sediment.
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Polylines defining the channel thalweg and / or channel edge of buried or open features. Chronological information is presented as calendar age BP. Confidence is defined as follows: 1. High: Sampled feature with good age and palaeoenvironmental control. 2. Sampled feature with poor or none age and palaeoenvironmental control. 3. Constructed by remote sensing data only. 4. Low: Reasonable without any direct evidence.
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Terraces are defined as a step-like landform and can be sub-divided thus: 1. Marine (1a: erosional / 1b: depositional); 2. Fluvial (2a: erosional / 2b: depositional); 3. Lacustrine (3a: erosional / 3b: depositional); 4. Other. Further information on genesis of the terrace e.g. Erosional (e.g. wave-cut platform), Depositional (e.g. fluvial margins) is presented if known. Chronological information is presented as calendar age BP. Confidence is defined as follows: 1. High: Sampled feature with good age and palaeoenvironmental control. 2. Sampled feature with poor or none age and palaeoenvironmental control. 3. Constructed by remote sensing data only. 4. Low: Reasonable without any direct evidence.
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Relict lagoon coastal landform defined as a shallow body of water separated from a larger body of water by barrier islands or reefs. Chronological information is presented as calendar age BP. Confidence is defined as follows: 1. High: Sampled feature with good age and palaeoenvironmental control. 2. Sampled feature with poor or none age and palaeoenvironmental control. 3. Constructed by remote sensing data only. 4. Low: Reasonable without any direct evidence.
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The thickness maps of the Post-LGM deposits can be used to identify areas where i) pre-Holocene submerged landscapes are exposed at or close to the seabed, or, ii) where there is high potential for preservation of early Holocene landscape features such as submerged river valleys or coasts. Contours are presented as depth (metres) below the present seafloor or the base of the post-LGM sedimentary cover. In glaciated regions, the thickness of the Holocene is used.
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Palaeocastlines are features that delineate former coastlines and shorelines, which are divided into drowned and raised shorelines.
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Submerged accumulation of partially decayed vegetation or organic matter. Chronological information is presented as calendar age BP. Confidence is defined as follows: 1. High: Sampled feature with good age and palaeoenvironmental control. 2. Sampled feature with poor or none age and palaeoenvironmental control. 3. Constructed by remote sensing data only, 4. Low: Reasonable without any direct evidence
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Coastal landscape underlain by limestone which has been eroded by dissolution. Where known this has been subdivided thus: 1. Caves; 2. Sinkholes; 3. Solution pans; 4. Cockpits; 5. Karst cones; 6. Towers; 7. Boulder piles; 8. Tor; 9. Other. Note that we are using the term ‘sinkhole’ to include dolines, cenotes and swallow holes. Chronological information is presented as calendar age BP. Confidence is defined as follows: 1. High: Sampled feature with good age and palaeoenvironmental control. 2. Sampled feature with poor or none age and palaeoenvironmental control. 3. Constructed by remote sensing data only. 4. Low: Reasonable without any direct evidence.