The high-resolution digital surface model (DSM1, DOM1) of the watercourses Elbe and Lower Havel is based on the airborne laser scanning data, undertaken from 06 January 2022 to 18 March 2022 in the Elbe area and from 20 to 22 December 2021 in the Havel area. It was produced and published by Germany’s Federal Institute of Hydrology (BfG), on behalf of the River Basin Community Elbe (RBC Elbe, FGG Elbe). The work was supported by the German Federal Waterways and Shipping Administration (WSV) and the surveying offices and water management administrations of six German states - Saxony, Saxony-Anhalt, Brandenburg, Lower Saxony, Mecklenburg-Vorpommern and Schleswig-Holstein. The data cover both the area around the inland water stretches of the Elbe from the Czech-German border to the village of Zollenspieker (part of the city of Hamburg) and the Lower Havel waterway from the town of Rathenow to its confluence with the Elbe. Since the dataset has a large coverage of 4,043 km², it is split into 62 sections. They were either labelled *HW in case of flood relevant areas (in German: “hochwasser-relevante Gebiete”) or *AU in case of historical floodplains (in German: “Altauengebiete”). Financing was divided according to these categories: In the HW areas, the project was co-funded by BfG, the WSV and the federal states, while in the AU areas, BfG covered all project costs. For each section we provide hillshade (*HS) and height maps (*NHN). The data are available in a raster resolution of 1 meter in GeoTiff format; Coordinate reference frame: ETRS89.DREF91.R16; Coordinate projection: UTM Zone 33N; EPSG-Code: 25833; Height reference system: DHHN2016, national vertical reference frame in Germany (2022). For further information please contact us. Citation short: BfG et al. / i.A. FGG Elbe (2025)
Das bildbasierte DOM (bDOM) bildet, wie das DOM, die Erdoberfläche und die darauf befindlichen Objekte zum Zeitpunkt der Aufnahme der Luftbilder ab.
Das bDOM wird aus Punktwolken abgeleitet, die mittels Korrelation orientierter Luftbilder (OLB) aus dem geotopographischen Bildflug generiert werden. Dieses Verfahren bietet die Möglichkeit, Koordinatenpaare pixelweise zuzuordnen und mit Attributen wie z. B. den Farbwerten der Luftbilder (RGBI) zu versehen. Ein weiteres Attribut beschreibt, ob der Höhenwert eines Rasterelementes aus der Bildkorrelation berechnet oder interpoliert wurde und damit ein synthetisch erzeugter Punkt ist.
-Dieser Datensatz steht ausschließlich bei online-Abruf kostenfrei zur Verfügung.-
During the summer of 2015, we reproduced three levels of browning and seven levels of nutrients using water from lake Stechlin (North-East Germany). We applied ultra-high-resolution mass-spectrometry and dissolved organic matter optical properties to retrieve the composition of the DOM at different levels of resolutions. Using a network analysis approach, we found that molecular formulas clustering together share a common origin.