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WRRL Überblicksweise Überwachung Seen

Die überblicksweise Überwachung dient der Bewertung des Zustands und langfristiger Veränderungen und wird in Schleswig-Holstein an den fünf großen Seen größer 10 km² Seefläche durchgeführt. Eine überblicksweise chemische Überwachung findet mindestens einmal in sechs Jahren statt. Bei der biologischen Überwachung der Seen liegt das Intervall bei einem bis drei Jahren.

WRRL Operative Überwachung Seen

Die operative Überwachung wird an 67 Seen mit einer Seefläche größer 50 ha durchgeführt, welche die geltenden Umweltziele wahrscheinlich nicht erfüllen, um das Ausmaß und die Auswirkung der Belastungen und die Wirkung der durchgeführten Maßnahmen beurteilen zu können, sowie an Wasserkörpern, in die prioritäre Stoffe eingeleitet werden. Hierbei werden solche biologischen Qualitätskomponenten und stoffliche Parameter überwacht, die auf die Belastungen am empfindlichsten bzw. deutlichsten reagieren. Der Untersuchungsumfang wird während des Bewirtschaftungszeitraums den Erfordernissen angepasst.

ADCP current measurements (1200 kHz) during RV SENCKENBERG cruise SE202208-2

Ocean velocities were collected by a Teledyne RDI 1200 kHz Workhorse Sentinel II ADCP that was mounted on RV SENCKENBERG during RV SENCKENBERG cruise SE202208-2. The transducer was located at 1.5 m below the water line. The instrument was operated in single-ping, broadband mode with bin size of 0.25 m and a blanking distance of 0.25 m. The velocity of the ship was calculated from position fixes obtained by the Global Positioning System (GPS) received at a Trimble SPS461 Modular GPS Heading Receiver. Heading was obtained both from the Trimble receiver and the internal ADCP gyro. Heading as well as pitch and roll data from ADCP's internal gyrocompass and the navigation data were used by the data acquisition software ViSea DAS (AquaVision®) internally to convert ADCP velocities into earth coordinates. Accuracy of the ADCP velocities mainly depends on the quality of the position fixes as well as Trimble receiver and internal ADCP heading data. Further errors stem from a misalignment of the transducer with RV SENCKENBERG's centerline.

ADCP current measurements (1200 kHz) during RV SENCKENBERG cruise SE202208-1

Ocean velocities were collected by a Teledyne RDI 1200 kHz Workhorse Sentinel II ADCP that was mounted on RV SENCKENBERG during RV SENCKENBERG cruise SE202208-1. The transducer was located at 1.5 m below the water line. The instrument was operated in single-ping, broadband mode with bin size of 0.25 m and a blanking distance of 0.25 m. The velocity of the ship was calculated from position fixes obtained by the Global Positioning System (GPS) received at a Trimble SPS461 Modular GPS Heading Receiver. Heading was obtained both from the Trimble receiver and the internal ADCP gyro. Heading as well as pitch and roll data from ADCP's internal gyrocompass and the navigation data were used by the data acquisition software ViSea DAS (AquaVision®) internally to convert ADCP velocities into earth coordinates. Accuracy of the ADCP velocities mainly depends on the quality of the position fixes as well as Trimble receiver and internal ADCP heading data. Further errors stem from a misalignment of the transducer with RV SENCKENBERG's centerline.

ADCP current measurements (1200 kHz) during RV SENCKENBERG cruise SE202206-1

Ocean velocities were collected by a Teledyne RDI 1200 kHz Workhorse Sentinel II ADCP that was mounted on RV SENCKENBERG during RV SENCKENBERG cruise SE202206-1. The transducer was located at 1.5 m below the water line. The instrument was operated in single-ping, broadband mode with bin size of 0.25 m and a blanking distance of 0.25 m. The velocity of the ship was calculated from position fixes obtained by the Global Positioning System (GPS) received at a Trimble SPS461 Modular GPS Heading Receiver. Heading was obtained both from the Trimble receiver and the internal ADCP gyro. Heading as well as pitch and roll data from ADCP's internal gyrocompass and the navigation data were used by the data acquisition software ViSea DAS (AquaVision®) internally to convert ADCP velocities into earth coordinates. Accuracy of the ADCP velocities mainly depends on the quality of the position fixes as well as Trimble receiver and internal ADCP heading data. Further errors stem from a misalignment of the transducer with RV SENCKENBERG's centerline.

ADCP current measurements (1200 kHz) during RV SENCKENBERG cruise SE202203-2

Ocean velocities were collected by a Teledyne RDI 1200 kHz Workhorse Sentinel II ADCP that was mounted on RV SENCKENBERG during RV SENCKENBERG cruise SE202203-2. The transducer was located at 1.5 m below the water line. The instrument was operated in single-ping, broadband mode with bin size of 0.25 m and a blanking distance of 0.25 m. The velocity of the ship was calculated from position fixes obtained by the Global Positioning System (GPS) received at a Trimble SPS461 Modular GPS Heading Receiver. Heading was obtained both from the Trimble receiver and the internal ADCP gyro. Heading as well as pitch and roll data from ADCP's internal gyrocompass and the navigation data were used by the data acquisition software ViSea DAS (AquaVision®) internally to convert ADCP velocities into earth coordinates. Accuracy of the ADCP velocities mainly depends on the quality of the position fixes as well as Trimble receiver and internal ADCP heading data. Further errors stem from a misalignment of the transducer with RV SENCKENBERG's centerline.

ADCP current measurements (1200 kHz) during RV SENCKENBERG cruise SE202203-1

Ocean velocities were collected by a Teledyne RDI 1200 kHz Workhorse Sentinel II ADCP that was mounted on RV SENCKENBERG during RV SENCKENBERG cruise SE202203-1. The transducer was located at 1.5 m below the water line. The instrument was operated in single-ping, broadband mode with bin size of 0.25 m and a blanking distance of 0.25 m. The velocity of the ship was calculated from position fixes obtained by the Global Positioning System (GPS) received at a Trimble SPS461 Modular GPS Heading Receiver. Heading was obtained both from the Trimble receiver and the internal ADCP gyro. Heading as well as pitch and roll data from ADCP's internal gyrocompass and the navigation data were used by the data acquisition software ViSea DAS (AquaVision®) internally to convert ADCP velocities into earth coordinates. Accuracy of the ADCP velocities mainly depends on the quality of the position fixes as well as Trimble receiver and internal ADCP heading data. Further errors stem from a misalignment of the transducer with RV SENCKENBERG's centerline.

In-situ Raman spectra from Na2ATP solutions with starting pH 3 and 7 at 80,100 and 120 °C for determination of the hydrolysis rate constant of ATP

Extremophiles maintain an active metabolism up to 122 °C (Takai et al. 2008). These extreme conditions are found, for example in hot springs, in deep oceanic and crustal sediments and in hydrothermal vents at mid-oceanic spreading ridges (Edwards et al., 2011; Heuer et al., 2020). Several studies have investigated the diversity of microorganisms and their relationship to the geological environment as well as to responses to changes. However, the physicochemical parameters necessary to sustain metabolism under these conditions, including the stability of essential molecular compounds like adenosine triphosphate (ATP) and adenosine diphosphate (ADP) have been only studied marginally. Adenosine triphosphate and adenosine diphosphate are essential energy stores in all currently known metabolic systems. In living cells, the energy is released by the enzymatically controlled exergonic hydrolysis of ATP to power other vital endergonic processes. The abiotic hydrolysis of ATP is kinetically enhanced at elevated temperatures and low pH values resulting in a very short lifetime of ATP and ADP in aqueous solutions (Hulett 1970; Khan and Mohan 1974; Leibrock et al. 1995). Therefore, the kinetic stability of ATP plays a crucial role in metabolism at extreme temperatures. This aspect has been proposed as a critical factor in determining the limits of living cells (Bains et al. 2015). This data publication compromises all Raman spectra obtained for solutions of Na2ATP with an initial pH of 3 and 7 at 80 °C, 100 °C and 120 °C and for solutions of Na2ADP with initial pH 5 at 100 °C and 120 °C. A hydrothermal diamond anvil cell (HDAC) coupled to a Raman spectrometer was used for in-situ measurements. Pressure was estimated from the vapor-liquid curve of water. In addition to the Raman spectra, the following data are provided: an assignment of peaks in the fitted spectral range, the initial fit parameters, and the fit results.

ADCP current measurements (600 kHz) on 09.03.2023 during RV HEINCKE cruise HE614

Ocean velocities were collected by a Teledyne RD Instruments 600 kHz RiverRay ADCP that was mounted on an autonomous surface catamaran along a predefined transect pattern on March 09th 2023 during RV HEINCKE cruise HE614. The transducer was located at 0.257 m below the water line. The instrument was operated in single-ping, broadband mode with automatically selected bins (ranging from 0.1 - 0.8 m) depending on water depth and a blanking distance of 0.25 m. The catamaran's velocity was calculated from position fixes obtained by the Global Positioning System (GPS). Heading, pitch and roll data from the ADCP's internal gyrocompass and the navigation data were used by the data acquisition software ViSea DAS (AquaVision®) internally to convert ADCP velocities into earth coordinates. Accuracy of the ADCP velocities mainly depends on the quality of the position fixes and the catamaran's heading data.

Steuerrandmessungen Elbe und Jade/Weser 2012

Die BAW (Bundesanstalt für Wasserbau) führt im Auftrag der WSV (Wasserstraßen- und Schifffahrtsverwaltung des Bundes) umfangreiche F&E-Untersuchungen (Forschung- und Entwicklung) zur Klimafolgenforschung sowie zur Auswirkung geplanter Ausbaumaßnahmen an Seeschifffahrtsstraßen durch. Hierfür werden hochauflösende dreidimensionale numerische Simulationsmodelle eingesetzt. Die Aussagefähigkeit und Qualität der Simulationsergebnisse ist hierbei entscheidend von der Güte der Steuerung an den Modellrändern abhängig. Die Modelltopographie (= "Rechengitter") und die verwendeten hydrologischen Bedingungen auf den Modellrändern sollten möglichst einen identischen Zeitraum repräsentieren. Da die Modelltopographien für die Modellgebiete des "Jade-Weser" und des "Elbe" - Modells der BAW im Jahr 2012 neu aufgebaut worden sind, ist im Sommer 2012 ein Messprogramm zur Erfassung der hydrologischen Randbedingungen durchgeführt worden. Zu diesem Zweck hat die BAW - Dienstort Hamburg ein Messnetz aus insgesamt 13 Beobachtungsstationen entlang der Steueränder der numerischen Modellsysteme eingerichtet. Mindestens über den Zeitraum eines "Nipp-Spring-Zyklus" (~ 14 Tage) wurden in verschiedenen Gerätekonfigurationen folgende Parameter gemessen: CTD-Messungen (Conductivity, Temperature, Depth): - Wasserspiegelauslenkung (Tidekurve) - Salinität - Temperatur - Trübung (teilweise) Für Zwecke der Modellvalidierung sind auf einem ca. 10 km parallel in das Modellgebiet verschobenen Rand ADCP-Messungen (Acoustic Doppler Current Profiler): - Strömungs- und - Seegangsmessungen (teilweise) durchgeführt worden. Soweit verfügbar sind Daten der von der WSV betriebenen Pegelstationen einbezogen worden. Für meterologische Informationen stehen Daten des DWD zur Verfügung (Quelle: Deutscher Wetterdienst).

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