Dr. Ulf Mallast
Contact
Department Monitoring- and Exploration Technologies
eLTER Head Office
Helmholtz Centre for Environmental Research- UFZ
Permoserstr. 15
04318 Leipzig
Tel: +49 (0) 341 235 1754
Fax: +49 (0) 341 235 1989
ulf.mallast@ufz.de
Research interests
- Application of remote sensing to scale in-situ data (greenhouse gas emissions, soil moisture, surface temperature, vegetation, etc.)
- Standardised application of UAVs for marine and terrestrial monitoring
- Coupling of spatially explicit satellite- and UAV-based SST analyses (mono- and multi-temporal) with hydrochemical in-situ data (222Rn, 18O, 2H) to detect and characterize submarine groundwater discharge (SGD)
Academic background
since 11/2019
ShowCase co-lead of SC4 within the EU H2020 Project "e-shape" at the Helmholtz Centre for Environmental Research - UFZ / eLTER Head Office
10/2017-
12/2017
DFG Merctor Fellow within the DFG Research Training Group "Baltic Transcoast"
01/2016-
03/2016
YSEP research fellow at the Geological Survey of Israel
01/2013-
10/2019
PostDoc at the Helmholtz Centre for Environmental Research - UFZ
02/2009-
01/2013
Dr. rer. nat (PhD) in Remote Sensing; PhD thesis "Current status and long-term insights into the western Dead Sea groundwater system using multi-sensoral remote sensing"
04/2008-
10/2008
Study at the Institute of Geography, University of Leipzig; Diploma thesis "A hydrological event modeling of the Río Maipo watershed (Chile) based on remote sensing data"
Publications
2020 (5)
- Mallast, U., Staniek, M., Koschorreck, M. (2020):
Spatial upscaling of CO2 emissions from exposed river sediments of the Elbe River during an extreme drought
Ecohydrology 13 (6), art. e2216
full text (doi) - Mallast, U., Waska, H., Moosdorf, N. (2020):
Königshafen submarine groundwater discharge network (KiSNet)
22nd EGU General Assembly, EGU2020, Vienna, Austria, 4-8 May 2020
p. EGU2020-5424
full text (url) - Nylund, A.T., Arneborg, L., Tengberg, A., Mallast, U., Hassellöv, I.-M. (2020):
In situ observations of turbulent ship wakes and their potential implications for vertical mixing
Ocean Sci.
full text (doi) - Rödiger, T., Magri, F., Geyer, S., Mallast, U., Odeh, T., Siebert, C. (2020):
Calculating man-made depletion of a stressed multiple aquifer resource on a national scale
Sci. Total Environ. 725 , art. 138478
full text (doi) - Wilske, C., Suckow, A., Mallast, U., Meier, C., Merchel, S., Merkel, B., Pavetich, S., Rödiger, T., Rugel, G., Sachse, A., Weise, S.M., Siebert, C. (2020):
A multi-environmental tracer study to determine groundwater residence times and recharge in a structurally complex multi-aquifer system
Hydrol. Earth Syst. Sci. 24 (1), 249 - 267
full text (doi)
2019 (2)
- Mallast, U., Siebert, C. (2019):
Combining continuous spatial and temporal scales for SGD investigations using UAV-based thermal infrared measurements
Hydrol. Earth Syst. Sci. 23 (3), 1375 - 1392
full text (doi) - Mallast, U., Siebert, C. (2019):
UAV in combination with a thermal infrared sensor for the use in groundwater research
21st EGU General Assembly, EGU2019, Proceedings from the conference held 7-12 April, 2019 in Vienna, Austria
Geophysical Research Abstracts 21
European Geosciences Union (EGU), p. EGU2019-15129
full text (url)
2018 (1)
- Oehler, T., Eiche, E., Putra, D., Adyasari, D., Hennig, H., Mallast, U., Moosdorf, N. (2018):
Seasonal variability of land-ocean groundwater nutrient fluxes from a tropical karstic region (southern Java, Indonesia)
J. Hydrol. 565 , 662 - 671
full text (doi)
2017 (3)
- Oehler, T., Eiche, E., Putra, D., Adyasari, D., Hennig, H., Mallast, U., Moosdorf, N. (2017):
Timing of land–ocean groundwater nutrient fluxes from a tropical karstic region (southern Java, Indonesia)
Hydrol. Earth Syst. Sci. Discuss. , 10.5194/hess-2017-621
full text (doi) - Schubert, M., Knöller, K., Stollberg, R., Mallast, U., Ruzsa, G., Melikadze, G. (2017):
Evidence for submarine groundwater discharge into the Black Sea—investigation of two dissimilar geographical settings
Water 9 (7), art. 468
full text (doi) - Siebert, C., Merkel, B., Pohl, T., Yechieli, Y., Hazan, E., Ionescu, D., Mallast, U. (2017):
New types of submarine groundwater discharge from a saliferous clay formation – the case of the Dead Sea
EGU General Assembly 2017, Vienna, Austria, 23–28 April 2017
Geophysical Research Abstracts 19
European Geosciences Union (EGU), p. EGU2017-14991
full text (url)
2016 (2)
- Kottmeier, C., Agnon, A., Al-Halbouni, D., Alpert, P., Corsmeier, U., Dahm, T., Eshel, A., Geyer, S., Haas, M., Holohan, E., Kalthoff, N., Kishcha, P., Krawczyk, C., Lati, J., Laronne, J.B., Lott, F., Mallast, U., Merz, R., Metzger, J., Mohsen, A., Morin, E., Nied, M., Rödiger, T., Salameh, E., Sawarieh, A., Shannak, B., Siebert, C., Weber, M. (2016):
New perspectives on interdisciplinary earth science at the Dead Sea: The DESERVE project
Sci. Total Environ. 544 , 1045 - 1058
full text (doi) - Siebert, C., Rödiger, T., Geyer, S., Laronne, J.B., Hillel, N., Sauter, M., Mallast, U. (2016):
Multidisciplinary investigations of the transboundary Dead Sea basin and its water resources
In: Borchardt, D., Bogardi, J., Ibisch, R.B. (eds.)
Integrated water resources management: concept, research and implementation
Springer, Basel, p. 107 - 127
full text (doi)
2015 (2)
- Schulz, S., Horovitz, M., Rausch, R., Michelsen, N., Mallast, U., Köhne, M., Siebert, C., Schüth, C., Al-Saud, M., Merz, R. (2015):
Groundwater evaporation from salt pans: examples from the eastern Arabian Peninsula
J. Hydrol. 531 (Part 3), 792 - 801
full text (doi) - Siebert, C., Merkel, B., Pohl, T., Ionescu, D., Mallast, U. (2015):
Exploration of SGD structures by remote sensing technologies and aquatic geochemistry
EGU General Assembly 2015, Vienna, Austria, 12–17 April 2015
Geophysical Research Abstracts 17
European Geosciences Union (EGU), p. EGU2015-3686
2014 (6)
- Mallast, U., Gloaguen, R., Friesen, J., Rödiger, T., Geyer, S., Merz, R., Siebert, C. (2014):
How to identify groundwater-caused thermal anomalies in lakes based on multi-temporal satellite data in semi-arid regions
Hydrol. Earth Syst. Sci. 18 (7), 2773 - 2787
full text (doi) - Rödiger, T., Geyer, S., Mallast, U., Merz, R., Krause, P., Fischer, C., Siebert, C. (2014):
Multi-response calibration of a conceptual hydrological model in the semiarid catchment of Wadi al Arab, Jordan
J. Hydrol. 509 , 193 - 206
full text (doi) - Schubert, M., Scholten, J., Schmidt, A., Comanducci, J.F., Pham, M.K., Mallast, U., Knoeller, K. (2014):
Submarine groundwater discharge at a single spot location: evaluation of different detection approaches
Water 6 (3), 584 - 601
full text (doi) - Siebert, C., Mallast, U., Rödiger, T., Ionescu, D., Schwonke, F., Hall, J.K., Sade, A.R., Pohl, T., Merkel, B. (2014):
Multiple sensor tracking of submarine groundwater discharge: concept study along the Dead Sea
EGU General Assembly 2014, Vienna, Austria, 27 April–02 May 2014
Geophysical Research Abstracts 16
European Geosciences Union (EGU), p. EGU2014-11217 - Siebert, C., Mallast, U., Rödiger, T., Strey, M., Ionescu, D., Häusler, S., Noriega, B., Pohl, T., Merkel, B. (2014):
Submarine groundwater discharge at the Dead Sea
In: Wiederhold, H., Michaelsen, J., Hinsby, K., Nommensen, B. (eds.)
SWIM 2014 : 23rd Salt Water Intrusion Meeting; Programme and Proceedings
Leibniz-Institut für Angewandte Geophysik, Hannover, p. 366 - 370 - Siebert, C., Rödiger, T., Mallast, U., Gräbe, A., Guttman, J., Laronne, J.B., Storz-Peretz, Y., Greenman, A., Salameh, E., Al-Raggad, M., Vachtman, D., Zvi, A.B., Ionescu, D., Brenner, A., Merz, R., Geyer, S. (2014):
Challenges to estimate surface- and groundwater flow in arid regions: The Dead Sea catchment
Sci. Total Environ. 485-486 , 828 - 841
full text (doi)
2013 (3)
- Mallast, U., Schwonke, F., Gloaguen, R., Geyer, S., Sauter, M., Siebert, C. (2013):
Airborne thermal data identifies groundwater discharge at the north-western coast of the Dead Sea
Remote Sens. 5 (12), 6361 - 6381
full text (doi) - Mallast, U., Siebert, C., Schwonke, F., Gloaguen, R., Rödiger, T., Geyer, S., Sauter, M., Merz, R. (2013):
Airborne thermal data reveal groundwater discharge at the north-western coast of the Dead Sea
EGU General Assembly 2013, Vienna, Austria, 07–12 April 2013
Geophysical Research Abstracts 15
European Geosciences Union (EGU), p. EGU2013-5586 - Mallast, U., Siebert, C., Wagner, B., Sauter, M., Gloaguen, R., Geyer, S., Merz, R. (2013):
Localisation and temporal variability of groundwater discharge into the Dead Sea using thermal satellite data
Environ. Earth Sci. 69 (2), 587 - 603
full text (doi)
2012 (2)
- Mallast, U., Siebert, C., Gloaguen, R., Wagner, B., Schwonke, F., Rödiger, T., Geyer, S., Krieg, R., Sauter, M., Kühn, F., Merz, R. (2012):
Remote sensing application possibilities on groundwater characterization in arid regions at the example of the Dead Sea
EGU General Assembly 2012, Vienna, Austria, 22–27 April 2012
Geophysical Research Abstracts 14
European Geosciences Union (EGU), p. EGU2012-5273 - Mallast, U., Siebert, C., Schwonke, F., Wagner, B., Rödiger, T., Geyer, S., Gloaguen, R., Sauter, M., Kühn, F., Merz, R. (2012):
Application of thermal data for groundwater studies in arid regions at the example of the Dead Sea
In: Rausch, R., Schüth, C., Himmelsbach, T. (eds.)
Hydrogeology of arid environments : proceedings ; [results of the Conference "Hydrogeology of Arid Environments", March 2012 in Hannover (Germany)]
Borntraeger, Stuttgart, p. 84 - 88
2011 (2)
- Mallast, U., Gloaguen, R., Geyer, S., Rödiger, T., Siebert, C. (2011):
Derivation of groundwater flow-paths based on semi-automatic extraction of lineaments from remote sensing data
Hydrol. Earth Syst. Sci. 15 (8), 2665 - 2678
full text (doi) - Mallast, U., Schwonke, F., Siebert, C., Maraschek, U., Kemper, G., Geyer, S., Kühn, F. (2011):
Hochauflösende flugzeuggestützte Thermalfernerkundung zur Kartierung submariner und terrestrischer Grundwasserquellen in der hochsalinaren Uferzone des Toten Meeres. Erste Ergebnisse von Befliegungskampagnen am Westufer des Toten Meeres im Januar 2011
In: Seyfert, E. (Hrsg.)
Geodaten – eine Ressource des 21. Jahrhunderts. Vorträge 31. Wissenschaftlich-Technische Jahrestagung der DGPF, 13. - 15. April 2011 in Mainz
Publikationen der Deutschen Gesellschaft für Photogrammetrie, Fernerkundung und Geoinformation e.V. 20
Geschäftsstelle der DGPF, Münster, S. 1 - 10