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Found 22 results.

Late Glacial and Holocene lead isotopes and lead concentration data from Füramoos, Southwestern Germany

Lead concentration and stable isotopes were analysed using inductively coupled plasma mass spectrometry (ICP-MS) in samples from an ombrotrophic peat bog at Füramoos (southern Germany).

Major and trace element concentrations and Sr, Nd, Hf, Pb isotope ratios of global mid ocean ridge and ocean island basalts

Major and trace element concentrations and Sr, Nd, Hf, Pb isotope ratios of global mid ocean ridge and ocean island basalt whole-rock compositions from the GEOROC and PetDB databases (2021-2022). Key publications: Stracke, A., Willig, M., Genske, F., Béguelin, P., & Todd, E. (2022). Chemical Geodynamics Insights From a Machine Learning Approach. In Geochemistry, Geophysics, Geosystems (Vol. 23, Issue 10). https://doi.org/10.1029/2022GC010606 Stracke, A., Willig, M., Genske, F., Béguelin, P., & Todd, E. (2022). Chemical and radiogenic isotope data of ocean island basalts from Tristan da Cunha, Gough, St. Helena, and the Cook-Austral Islands [dataset]. GRO.data. https://doi.org/10.25625/BQENGN

Iso-2-Drone: UAV-based gas monitoring systems for the underpinning of urban, agricultural and industrial emission roadmaps

Gas emission measurements at an ecosystem or site relevant scale, currently require substantial infra-structure investment in terms of flux towers or hiring airplanes for measurements, which renders the methods logistically difficult, inflexible and ultimately rare. Although there are moves towards satellite based technologies for measuring gas concentrations these methods do not provide information on the potential sources, sinks and processes driving the gas emissions that stable isotope based Keeling Plot techniques do. Consequently site specific methods for gas sampling and flux portioning are still required. Given this, hundreds if not thousands of researchers and authorities around the world are seeking new technologies to accurately measure gas emissions easily, from a vast variety of urban, natural and agro ecosystems across the globe. In the last couple of years easy access to unmanned aerial vehicles (UAV) has opened up new opportunities for remote gas sampling. These measurements could all be achieved at any remote site with minimal infrastructure costs, personnel training and possibilities for outsourcing of gas analysis and flux calculations. The ultimate vision of a plug and play Iso-2-Drone coupled with a full service package would open up a much larger potential market and allow local governments, industries and research organizations to secure realistic measurements of their gas fluxes at reasonable costs. With the original FFG Iso-Drone innovation check we at CombInnoTec GmbH and the AIT took this novel state of the art idea of Iso-Drone off the drawing board to create a functional primary prototype, which established the proof of principle that an independently operated gas sampling system could be constructed. With our combined expertise in mechatronics and stable isotope greenhouse gas measurements. We proved that Iso-Drone was fit for purpose in terms of providing appropriate number and volume of gas samples needed for Keeling Plots. With significant CombInnoTec investment and two subsequent small exploratory grants from the UN we further improved the technology and demonstrated that the system was light enough to fit onto an available drone and that it was capable of accurate sampling for isotope analysis and thus calculation of GHG flux measurements specifically carbon dioxide. Now in this project we want to develop these nascent innovations and early prototypes into a commercially packaged, thoroughly tested and easily integrated gas sampling module that could fit onto any UAV's with appropriate payload capability and explore the possibilities of offering a full service package; rendering Iso-2-Drone the go to product for GHG flux measurements. We therefore want to team up with one of the forefront UAV companies in the environmental research sector in the USA, namely M3 Consulting Group, to further develop, test and place our product in a strategic position in the global market.

Chemical and Isotopic Composition of Gas in Salt Beds of a Potash Mine

In eastern Hesse and western Thuringia, Germany hosts significant potassium-bearing salt deposits industrially excavated in the Werra-Fulda mining district. The salt belongs to the upper Permian (Zechstein) and was deposited around 258 to 252.5 Ma ago. In the Werra-Fulda mining district, the halite rocks (Werra-Rocksalt, z1NA) contain two minable potash seams, potash Seam Thüringen (z1KTh) and potash Seam Hessen (z1KHe), with an average thickness between 2 m and 3 m (Figure 1). To investigate the chemical and isotopic composition of the gas phase of Seam Hessen, gaseous samples were collected from five, 2-meter deep, horizontal boreholes drilled in the potash horizon which is mined at a depth of 540 m. About 4 weeks in advance of the gas sampling, the packer-closed boreholes were evacuated to about 3kPa and the pressure gradient inside the holes was continuously monitored in the boreholes D1 to D5. Selected gas samples were analyzed for their noble gas isotopic composition and the δ13C values of CO2 and CH4. The noble gas isotopic compositions were determined using a VG 5400 noble gas mass spectrometer after purification in a preparation line. The carbon isotope compositions were analysed with a GC-IRMS, comprising a GC 6890N connected to a GC-C/TC III combustion device and coupled to a MAT 253 mass spectrometer. The standard deviation of the δ13C values (in ‰ vs. VPDB) is ± 0.5 ‰. The data are provided as one, Excel file with three spreadsheets as well as three individual, tab-delimited text files.

UHYDRO: Erfassungsprogramm für geologische und Grundwasserdaten im UIS Sachsen

Erfassungsprogrammpaket für Daten zu Bohrungen, Sondierungen, Pumpversuchen, anderen Untersuchungen zum geologischen Untergrund und zum Grundwasser. Verwendung von einheitlichen, für Sachsen festgelegten Datenstrukturen Nutzung bundesweit empfohlener Datenformate Basis für effektiven Datenaustausch zwischen verschiedenen Nutzern Kompatibilität zu vielen Standard- und Spezialprogrammen Kostenloser Versand mit ausführlicher Anleitungsbroschüre Sicherung einer fachlichen Mindestqualität bei geologischen Arbeiten Beliebige Kopiermöglichkeiten der dokumentierten Daten Datenhaltung durch das LfUG im Rahmen des Umweltinformationssystems Effektive DV-gestützte Recherchemöglichkeiten für geologische Daten, dadurch in vielen Fällen Einsparung umfangreicher manueller Archivrecherchen Wer nutzt UHYDRO? UHYDRO wurde in erster Linie für die Urheber der Daten, also Ingenieurbüros, Bohrfirmen, Hochschulen, oder Labors entwickelt. In Sonderfällen kann auch die Nutzung durch andere Firmen oder auch Behörden angezeigt sein. UHYDRO und die Anleitung kann jeder Interessent kostenlos erhalten. Die Nutzung der erfassten Daten kann wiederum durch jede Behörde, Firma usw. erfolgen, wenn ein entsprechender Anlass (Projekt, Auftrag usw.) vorliegt. Sachgruppen: Grund-/Stammdaten: Die Erfassung von Grund- und Stammdaten für einen Aufschluß ist zwingende Voraussetzung für Erfassung jeglicher weiterer Daten zum Aufschluss. Schichtenverzeichnis allgemeine geologische und hydrogeologische Beschreibungen von Aufschlüssen. Ausbau Ausbau von geologischen Aufschlüssen. Erfassung erfolgt abschnittsweise, d.h. für jeden Teufenbereich, der eine bestimmte Ausbauart aufweist, wird ein Datensatz angelegt. Ringraumhinterfüllung Ringraum-Hinterfüllung bei ausgebauten geologischen Aufschlüssen Erfassung erfolgt abschnittsweise, d.h. für jeden Teufenabschnitt, der eine bestimmte Hinterfüllung aufweist, wird ein Datensatz angelegt. Diese Sachgruppe dient auch zur Erfassung der Bohrlochkontur! Pumpversuche: zu Kopfdaten (Projektbezeichnung, etc.) ein oder mehrere Aufschlüsse zugeordnet, für die wiederum die einzelnen Meßwerte gespeichert werden. Tracerversuche (analog zur Sachgruppe Pumpversuche) Korngrößenanalysen: Korngrößenanalysen (nach DIN oder TGL-Norm). Isotopenananalysen: Grundwasserisotopenanalysen Gesteinsphysikalische Laboruntersuchungen: Daten aus geotechnischen Laboruntersuchungen (außer Korngößenanalysen), die der Gewinnung hydrogeologischer Kennwerte dienen Indirekte Aufschlüsse nach DIN 4094 (Sondierungen) Geochemie (Petro/Pedo) Proben- und Analysendaten von Boden-, Gesteins- und Mineralproben GW-Information zum Bohrvorgang: Grundwasserdaten, die während des Bohrvorganges gewonnen wurden (z.B. Grundwasserstand, Bohrteufe bei Grundwasseranschnitt, eingestellter GW-Stand im Bohrloch). Untersuchungsergebnisse Erfaassung.. Untersuchungsergebnisse werden auch durch die Auswerteprogramme in diese Datei geschrieben. Angaben zu den Rohstoffen In dieser Sachgruppe werden die Analysendaten von Rohstoffen erfaßt. GW-Stammdaten : =notwendiger, übergeordneter Datensatz für die Sachgruppen Hydrochemie und GW-Stände/GW-Mengen! Hydrochemie: Proben- und Analysendaten der Hydrochemie GW-Stände/GW-Mengen: In dieser Sachgruppe werden die Analysendaten von GW-Ständen und GW-Mengen

U-Th-Pb isotope and age determinations on sample Leit8

U-Th-Pb isotope and age determinations on sample Leit6

How vulnerable is Swiss soil organic matter to climate and land use changes?

Soil organic matter is very important for many soil functions. How long carbon remains in the soil is a key factor, but until now this has been little understood. Samuel Abiven and his team would like to raise the understanding of the dynamics of soil carbon. They are particularly concerned with the reaction of the soil organic matter to climate change and to changes in land use. The soil organic matter consists of a mixture of organic molecules that come from plant residues, as well as micro-organisms that decompose these residues in the soil and transform them. The soil organic matter contains a significant amount of the carbon, which, in terms of quantity comes globally to almost three times more than the amount contained in the atmosphere in the form of carbon dioxide and methane. In the soil, the carbon is however turning over much more slowly than in the atmosphere or with plant biomass. Soils can therefore be a sink for carbon, but also serve as a source, if conditions change and decomposition is accelerated. Climate change, for instance, can modify micro-organism activity as well as the structure of the soil organic matter. Changes in land use can change the physico-chemical properties, as well as the kind of litter material that penetrates the soil. The investigations will be coordinated with the research team of Frank Hagedorn (WSL) and Tim Eglinton (ETH Zurich). It is currently difficult to characterise the development of soil organic matter underlying these changes. It depends to a large part on the vulnerability of the organic soil matter to these changes. The project examines the vulnerability of soils, which - just like forest soils - possess a very high level of organic matter and therefore have a higher risk of losing soil matter as a consequence of climate and land use changes. The team, in so doing, is searching for possibilities to ascertain the vulnerability of the soils by examining their properties. It is be possible in this way to identify the most endangered soils and take suitable protective measures.

U-Th-Pb isotope and age determinations on sample Strieg5

U-Th-Pb and Hf isotopic data on zircon and apatite of non-granulite rocks from the Saxonian Granuilite Massif

The geology of the Saxon Granulite Massif and particularly its metamorphic history is a matter of on-going (passionate) discussions that resulted in several concurring tectonic models. Meanwhile, less attention has been paid on the pre- and post-metamorphic evolution of this area. Comprehensive compilation of available data and presentation of new geochemical and geochronological results help reconstructing the evolution of this part of the Central European Variscides and point towards partial involvement of non-Gondwanan crustal components during the Carboniferous. Therefore, at least parts of the Saxon Granulite Massif represent exotic fragments in the Saxothuringian Zone. Data given here comprises U-Th-Pb and Hf isotopic analyses of rocks from the Saxonian Granulite Massif.

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