Línurnar sýna friðunarsvæði, þar sem eldi laxfiska (fam. salmonidae) í sjókvíum er óheimilt skv. auglýsingu nr. 460/2004.

Gögnin voru tekin saman í byrjun árs 2015. Þau eru sett saman úr dýptarlínum úr sjókortum í tveimur mælikvörðum. Annars vegar í 1:100.000 og hins vegar í 1:300.000. Dýptarlínur í sjókortum eru ekki með jöfnu bili. Dýptarlínurnar eru þessar: 10 m, 20 m, 50 m, 75 m, 100 m, 150 m, 200 m, 300 m, 400 m, 500 m, 1000 m, 1500 m og 2000 m. Landhelgisgæsla Íslands safnaði gögnunum og annast um drefingu. Gögnin ná ekki til alls landsins. Helstu eigindi eru jafndýpislínur með dýpisgildi. Um er að ræða stök kort eða samsett í stærri heild á shape formi.

Þekja [layer] j100v_vesturgosbelti_gigar_1utg_fl: Gígar frá nútíma og hlýskeiðum ísaldar. [Holocene and interglacial lava craters.] Gígar frá nútíma og hlýskeiðum ísaldar. Gígar eru gjall- eða kleppragígar. [Holocene and interglacial lava craters. Craters may be spatter, scoria or tuff cones.]

Slope aspect map of Iceland. This tool calculates slope aspect (i.e. slope orientation in degrees clockwise from north) for each grid cell in an input digital elevation model (DEM). “Aspect values indicate the directions the physical slopes face.” The values of each cell in the output raster indicate the compass direction the surface faces at that location. It is measured clockwise in degrees from 0 (due north) to 360 (again due north), coming full circle. Flat areas having no downslope direction are given a value of -1.

Corine Land Cover (CLC) 2018 and CLC change 2012-2018 are two of the datasets produced within the frame of the Initial Operations of the Copernicus programme (the European Earth monitoring programme previously known as GMES) on land monitoring.Corine Land Cover (CLC) provides consistent information on land cover and land cover changes across Europe. This inventory was initiated in 1985 (reference year 1990) and established a time series of land cover information with updates in 2000, 2006. 2012 and now 2018. CLC products are based on photointerpretation of satellite images by national teams of participating countries - the EEA member and cooperating countries – following a standard methodology and nomenclature with the following base parameters: 44 classes in the hierarchical three level Corine nomenclature; minimum mapping unit (MMU) for status layers is 25 hectares; minimum width of linear elements is 100 metres; minimum mapping unit (MMU) for Land Cover Changes (LCC) for the change layers is 5 hectares. The resulting national land cover inventories are further integrated into a seamless land cover map of Europe. Land cover and land use (LCLU) information is important not only for land change research, but also more broadly for the monitoring of environmental change, policy support, the creation of environmental indicators and reporting. CLC datasets provide important datasets supporting the implementation of key priority areas of the Environment Action Programmes of the European Union as protecting ecosystems, halting the loss of biological diversity, tracking the impacts of climate change, assessing development in agriculture and implementing the EU Water Framework Directive, among others. More about the Corine Land Cover (CLC) and Copernicus land monitoring data in general can be found at http://land.copernicus.eu/

Þjónustan sýnir rýmingarreiti á þéttbýlisstöðum landsins þar sem talin er snjóflóðahætta. Reitaskiptinguna hefur Veðurstofan gert í samráði við heimamenn, og birt á sérstökum kortum og byggja rýmingaráætlanir staðanna á þessari reitaskiptingu. Samkvæmt lögum um varnir gegn snjóflóðum og skriðuföllum (49/1997) ber Veðurstofu Íslands að gefa út viðvaranir um staðbundna snjóflóðahættu. Skal þá rýma húsnæði á reitum sem tilgreindir eru í viðvörun Veðurstofunnar.

Þekja (layer) j100v_austurland_anomaliaC5n_1utg_li: Neðri mörk segulanomalíunar Chron 5. [Lower limits of magnetic anomaly Chron 5.] Útlínan fylgir efstu hraunum Grjótárólivínbasaltsyrpunnar. [The line follows the uppermost lava flows of Grjótá olivine basalt group.]

Staðsetning á mælipunktum sem nýttir eru til að fylgjast með breytingum á jökulsporðum. Mælt af sjálfboðaliðum og/eða félögum JÖRFÍ

The main high resolution grassland product is the Grassland layer, a grassland/non-grassland mask for the EEA39 area. This grassy and non-woody vegetation baseline product includes all kinds of grasslands: managed grassland, semi-natural grassland and natural grassy vegetation. It is a binary status layer mapping grassland and all non-grassland areas in 20m and (aggregated) 100m pixel size. Two additional (expert) products complete the high resolution grassland product: the Ploughing Indicator (PLOUGH) and the Grassland Vegetation Probability Index (GRAVPI). While the PLOUGH concentrates on historic land cover features with the aim to indicate ploughing activities in preceding years, the GRAVPI provides a measure of classification reliability. GRAVPI is a 20m pixel size product, mapping on a range of 1-100 the class probability. PLOUGH is a 20m pixel size additional product, mapping from 1-6 the number of years since the last indication of ploughing. A verification of the Grassland layer was performed by the Institute of Nature Research during autumn of 2018 and the data and resulting report are made available on the NLSI websites.

Þekjur (layers) n25v_gigarNutima_li og n25v_gigarNutima_fl: Eldvörp (gígar) og gervigígar sem myndast hafa eftir að jökull hvarf af landinu á síðjökultíma. (Volcanic craters and rootless vents formed after last Iceage [12.000 years ago].) Eldvörp og gervigígar sem myndast hafa eftir að jökull hvarf af landinu á síðjökultíma njóta sérstakrar verndar samkvæmt 61 gr. í lögum um náttúruvernd. Náttúrufræðistofnun Íslands heldur skrá yfir þessi náttúrufyrirbæri og birtir í kortasjá sem jafnframt er viðauki við náttúruminjaskrá. Heimildaskrá fylgir (n25v_gigarOgHraunNutima_heimildir).