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HW-gefährdeter Bereich Tidegebiet Elbe Hamburg

Hochwasser gefährdeter Bereich Tidegebiet Elbe Hamburg Fachliche Beschreibung: „Der durch Tidehochwasser, insbesondere Sturmfluten, gefährdete Bereich im Tidegebiet der Elbe besteht aus den Landflächen zwischen der Gewässerlinie der Elbe (§ 3) und der Linie der öffentlichen Hochwasserschutzanlagen oder, sofern öffentliche Hochwasserschutzanlagen nicht bestehen, der Linie des amtlich bekannt gemachten Bemessungswasserstands für öffentliche Hochwasserschutzanlagen zuzüglich eines Sicherheitszuschlags von 0,50 m." Auszug aus § 53 HWaG Rechtlicher Hintergrund: § 53 des Hamburgischen Wassergesetzes (HWaG) in der Fassung vom 29.05.2005 über "Hochwassergefährdeter Bereich im Tidegebiet der Elbe"

Distribution and concentration of nutrients, carbon compounds and methane during the January flood 2024, from the Elbe Estuary to the German Bight (North Sea), on the MOSES Sternfahrt-11

In winter 2023/24 a high precipitation rate in northern and eastern Germany increased the run-off volume of the Elbe and Weser rivers tremendously. The MOSES Sternfahrt-11 was conducted during and directly after the flood event, between 28th of December 2023 and 29th of January 2024 to identify its influence on the solution of different indication parameters. On January 10th and 11th in total seven samples within the port of Hamburg and the Elbe Estuary were taken from HPS ships and the Glückstadt ferry. The last two ships Mya II and Littorina covered the outflow of the Elbe into the German Bight. Both Ships had a transportable container laboratory (MOSES container) with a sensor system (see additional metadata) on board, measuring continuously different environmental data. Mya II started sampling on the 17th of January in Cuxhaven, cruising along the northern part of the German Bight towards Büsum. The second day the crew headed west towards Helgoland. The following crew on Littorina took over for the last two days, the 28th and 29th of January, covering the western part of the German Bight between Helgoland and Cuxhaven.

Digitale Vegetationskarte Tideelbe 2023/2024

Grundlage der Vegetationskarte waren die vergleichbar durchgeführten Kartierungen des Ist-Zustandes aus den Jahren 2007, 2011 und 2017 (nature-consult 2008, 2012 und 2018). Das digitale lagegenaue Kartenwerk aus 2017 ist zusammen mit den hochauflösenden digitalen Luftbilddaten aus 2023 und den LIDAR-Daten aus 2022 bearbeitet worden. Dabei erfolgten eine flächendeckende, vegetationskundliche digitale Anpassung der Vegetationsflächen für 2023 (visuelle Klassifikation) und zur Unterstützung wurde bei Bedarf partiell eine Klassifizierung als Entscheidungshilfe durchgeführt. Die Anpassung und partielle Klassifizierung wurden 2024 im Feld nahezu flächendeckende Verifizierung/Kartierung. Eine Übersetzung zu TMAP und Pflanzengesellschaften nach BfN 2000 und Drachenfels ist beigefügt. Die Daten wurden vom Fachbüro nature-consult erstellt. Die Zip-Datei enthält folgende Dateien: Elbe_2024_Vegetation.shp, Elbe_2024_Vegetation_Ebene_1.lyr, Elbe_2024_Vegetation_Ebene_2.lyr, Elbe_2024_Vegetation_Label.lyr, Endbericht_Elbe_2024_nature-consult_low_12-12-2024.pdf, Metadaten_Vegetationskarte.pdf, Link_zu_MetadatenGeoportalBfG.txt

Carbon compounds, methane concentration and nutritional composition of water samples along the Elbe to the North Sea (German Bight) during the MOSES projects' Sternfahrt 9 in 2022

The "Sternfahrt 9" cruise was conducted from the 30th of May to the 2nd of June 2022, covering a late spring situation in the German Bight. The three participating vessels (Littorina, Uthörn and Ludwig Prandtl) covered a wide range from 7.6°E to 8.9°E and from 53.5°N to 54.8°N, following similar tracks and sampling stations like those of the "Sternfahrt 5" in September 2020. Objective of this cruise was to get new insights on the chemical transformation of Chlorophyll-a and dissolved organic matter from the Elbe, Tide-Elbe and North Sea. Therefore, each ship was continuously measuring different hydrographic parameters and greenhouse gases along their tracks (not included in the present dataset, please see article(s) 'related to'). Additionally, each day eight stations were run by the crews along their respective track (for a more detailed description see 'file description'). Thus, delivering discrete water samples for later analyses of DIC, TA, DOC, methane, nutrients and explosive metals. Due to partly bad weather not always all stations could be realized. While the vessel Littorina covered the south eastern part of the German Bight, the Ludwig Prandtl went further North until the small island Amrum. The Uthörn instead sampled on one side in the north of Heligoland and on the other side in the south and south-west towards Cuxhaven (see map in 'additional metadata'). For more detailed information about the MOSEShx campaign and the cruise Sternfahrt 9, see article cited in references.

WMS HWRM-Karten 1.Zyklus Hamburg

Dieser Web Map Service (WMS) zeigt Daten des Hochwasserrisikomanagement (HWRM)-Karten des 1. Berichtszyklus (2016-2021). Zur genaueren Beschreibung der Daten und Datenverantwortung nutzen Sie bitte den Verweis zur Datensatzbeschreibung.

WFS HWRM-Karten 1.Zyklus Hamburg

Dieser WFS (Web Feature Service) zeigt Daten des Hochwasserrisikomanagement (HWRM)-Karten des 1. Berichtszyklus (2016-2021). Zur genaueren Beschreibung der Daten und Datenverantwortung nutzen Sie bitte den Verweis zur Datensatzbeschreibung.

WFS HW-gefährdeter Bereich Tidegebiet Elbe Hamburg

Web Feature Service (WFS )zum Thema HW-gefährdeter Bereich Tidegebiet Elbe Hamburg. Zur genaueren Beschreibung der Daten und Datenverantwortung nutzen Sie bitte den Verweis zur Datensatzbeschreibung.

WMS HW-gefährdeter Bereich Tidegebiet Elbe Hamburg

Web Map Service (WMS)zum Thema HW-gefährdeter Bereich Tidegebiet Elbe Hamburg. Zur genaueren Beschreibung der Daten und Datenverantwortung nutzen Sie bitte den Verweis zur Datensatzbeschreibung.

Zählung von Seehunden und Kegelrobben im Elbeästuar von Wedel bis Scharhörn 2023/2024

Aerial surveys were conducted in the Elbe Estuary, Germany, to count seals on their haul-out sites. Haul-out sites were located within the intertidal zone, usually close to the waterway or tidal creeks. The north-western border of the study area was located at the approximate river-km 753 (island of Scharhörn) and the south-eastern border was located at river-km 632 (Mühlenberger Loch). Flights were performed monthly from August 2023 until July 2024 (11 flights in total) at low tide. Within each month, a flight date in the middle of the month was chosen, depending on the tide and weather conditions. The flight scheduled for December 2023 had to be canceled due to persistently unfavorable weather conditions. Flights were performed with an aircraft at a height of approximately 500 feet and at an average speed of 100 knots. The flight routes were tracked via GPS. Sighted seals were photographed on their haul-out sites and the corresponding geographic position was recorded. In the office, the photos were used to identify the species and age class, and count the animals.

Zählung von Seehunden im Elbeästuar von Wedel bis Cuxhaven 2018/2019

Aerial surveys were conducted in the Elbe Estuary, Germany, to count harbour seals on their haul-out sites. Haul-out sites were located within the intertidal zone, usually close to the waterway or tidal creeks. The north-western border of the study area was located at river-km 728 (city of Cuxhaven) and the south-eastern border was located at river-km 632 (Mühlenberger Loch). Flights were performed monthly from August 2018 until July 2019 (12 flights in total) at low tide. Within each month, a flight date in the middle of the month was chosen, depending on the tide and weather conditions. Flights were performed with a twin-engined aircraft at a height of approximately 600 feet and at an average speed of 100 knots. The flight routes were tracked via GPS. Sighted harbour seals were photographed on their haul-out sites and the corresponding geographic position was recorded. In the office, the photos were used to count the animals. In the beginning of the pupping season in June, adult and juvenile individuals were counted separately. The sizes of individual seals were used to distinguish between both age classes. Later in the year, juvenile seals could no longer visually be distinguished from adult individuals due to the pups' rapid growth. Consequently, count data of juvenile harbour seals are only available for June 2019.

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