@article{LindenschmidtAlfredsenCarstensenetal.2022, author = {Lindenschmidt, Karl-Erich and Alfredsen, Knut and Carstensen, Dirk and Choryński, Adam and Gustafsson, David and Halicki, Michał and Hentschel, Bernd and Karjalainen, Niina and K{\"o}gel, Michael and Kolerski, Tomasz and Kornaś-Dynia, Marika and Kubicki, Michał and Kundzewicz, Zbigniew W. and Lauschke, Cornelia and Malinger, Albert and Marszelewski, Włodzimierz and M{\"o}ldner, Fabian and N{\"a}slund-Landenmark, Barbro and Niedzielski, Tomasz and Parjanne, Antti and Pawłowski, Bogusław and Pińskwar, Iwona and Remisz, Joanna and Renner, Maik and Roers, Michael and Rybacki, Maksymilian and Szałkiewicz, Ewelina and Szydłowski, Michał and Walusiak, Grzegorz and Witek, Matylda and Zagata, Mateusz and Zdralewicz, Maciej}, title = {Assessing and Mitigating Ice-Jam Flood Hazards and Risks}, series = {Water}, volume = {15}, journal = {Water}, number = {1}, publisher = {MDPI AG}, issn = {2073-4441}, doi = {10.3390/w15010076}, pages = {23}, year = {2022}, abstract = {The assessment and mapping of riverine flood hazards and risks is recognized by many countries as an important tool for characterizing floods and developing flood management plans. Often, however, these management plans give attention primarily to open-water floods, with ice-jam floods being mostly an afterthought once these plans have been drafted. In some Nordic regions, ice-jam floods can be more severe than open-water floods, with floodwater levels of ice-jam floods often exceeding levels of open-water floods for the same return periods. Hence, it is imperative that flooding due to river ice processes be considered in flood management plans. This also pertains to European member states who are required to submit renewed flood management plans every six years to the European governance authorities. On 19 and 20 October 2022, a workshop entitled "Assessing and mitigating ice-jam flood hazard and risk" was hosted in Poznań, Poland to explore the necessity of incorporating ice-jam flood hazard and risk assessments in the European Union's Flood Directive. The presentations given at the workshop provided a good overview of flood risk assessments in Europe and how they may change due to the climate in the future. Perspectives from Norway, Sweden, Finland, Germany, and Poland were presented. Mitigation measures, particularly the artificial breakage of river ice covers and ice-jam flood forecasting, were shared. Advances in ice processes were also presented at the workshop, including state-of-the-art developments in tracking ice-floe velocities using particle tracking velocimetry, characterizing hanging dam ice, designing new ice-control structures, detecting, and monitoring river ice covers using composite imagery from both radar and optical satellite sensors, and calculating ice-jam flood hazards using a stochastic modelling approach.}, language = {en} } @article{SchefflerModerSchrageetal.2023, author = {Scheffler, Holger and Moder, Michael and Schrage, Nico and Lippert, Kaj and Heß, Max and Rostan, Fabian and Carstensen, Dirk and K{\"o}hler, Albrecht and Schaarschmidt, Lars}, title = {Zusammenwirken von Planung und hydraulischer Untersuchung am HRB Weilers/Bracht}, series = {WASSERWIRTSCHAFT}, volume = {113}, journal = {WASSERWIRTSCHAFT}, number = {6}, publisher = {Springer Science and Business Media LLC}, issn = {0043-0978}, doi = {10.1007/s35147-023-1833-3}, pages = {44 -- 47}, year = {2023}, abstract = {Der Neubau eines Hochwasserr{\"u}ckhaltebeckens (HRB) erfordert umfangreiche hydraulische Untersuchungen. M{\"o}glichkeiten zur {\"U}berpr{\"u}fung und Optimierung einer wasserbaulichen Planung sind sowohl der physikalische Modellversuch als auch eine hydrodynamisch-numerische Str{\"o}mungsmodellierung. Fragestellungen zur Wirkungsweise und zu den Wechselwirkungen der Betriebseinrichtung eines HRB k{\"o}nnen so beantwortet werden. Der vorliegende Beitrag beschreibt das Zusammenwirken von Planung und hydraulischen Untersuchungen am Neubauprojekt HRB Weilers/Bracht in Hessen.}, language = {de} } @article{KoegelCarstensenSabrowski2024, author = {K{\"o}gel, Michael and Carstensen, Dirk and Sabrowski, Michael}, title = {3-D-HN-Untersuchungen des Plan-Zustandes am Hochwasserr{\"u}ckhaltebecken Watzdorf}, series = {WASSERWIRTSCHAFT}, volume = {114}, journal = {WASSERWIRTSCHAFT}, number = {1}, publisher = {Springer Science and Business Media LLC}, issn = {0043-0978}, doi = {10.1007/s35147-023-1954-8}, pages = {25 -- 30}, year = {2024}, abstract = {Basierend auf 3-D-HN-Untersuchungen des Ist-Zustandes am Hochwasserr{\"u}ckhaltebecken Watzdorf konnte festgestellt werden, dass im Falle extremer Hochwasserereignisse der entsprechende Zufluss voraussichtlich nicht schadlos abgef{\"u}hrt werden kann. Aufgrund dieser Erkenntnis wurde durch konstruktive Anpassungen im Bereich der Hochwasserentlastungsanlage ein Plan-Zustand entwickelt und numerisch untersucht, durch welchen eine Erh{\"o}hung des schadlos abf{\"u}hrbaren Zuflusses erfolgen sollte.}, language = {de} } @article{KoegelCarstensenSabrowski2023, author = {K{\"o}gel, Michael and Carstensen, Dirk and Sabrowski, Michael}, title = {3-D-HN-Untersuchungen am Hochwasserr{\"u}ckhaltebecken Watzdorf}, series = {WASSERWIRTSCHAFT}, volume = {113}, journal = {WASSERWIRTSCHAFT}, number = {6}, publisher = {Springer Science and Business Media LLC}, issn = {0043-0978}, doi = {10.1007/s35147-023-1847-x}, pages = {88 -- 91}, year = {2023}, abstract = {Aufgrund ver{\"a}nderter Hochwasserabfl{\"u}sse am Hochwasserr{\"u}ckhaltebecken Watzdorf waren die {\"U}berfallcharakteristik der Seitenentlastung sowie die Gr{\"o}ße des potenziell abf{\"u}hrbaren Abflusses zu quantifizieren. Die Bestimmung erfolgte durch dreidimensionale hydrodynamisch-numerische Simulationen. Die numerischen Berechnungsergebnisse wurden analytischen Berechnungen gegen{\"u}bergestellt, wodurch deutliche Unterschiede zwischen den jeweiligen Wasserstand-Abfluss-Beziehungen identifiziert werden konnten.}, language = {de} } @article{KoegelPflitschNorthupetal.2022, author = {K{\"o}gel, Michael and Pflitsch, Andreas and Northup, Diana E. and Carstensen, Dirk and Medley, Joseph J. and Mansheim, Teresa and Killing, Thomas and Buschbacher, Michael and Angerer, Helena and Falkner, Julian and Kynatidis, Achilleas and Ott, Valentin and Regler, Simon}, title = {Combination of close-range and aerial photogrammetry with terrestrial laser scanning to answer microbiological and climatological questions in connection with lava caves}, series = {Applied Geomatics}, volume = {14}, journal = {Applied Geomatics}, number = {4}, publisher = {Springer Science and Business Media LLC}, issn = {1866-9298}, doi = {10.1007/s12518-022-00459-7}, pages = {679 -- 694}, year = {2022}, abstract = {Combining photogrammetric reconstruction (close-range photogrammetry, CRP) and airborne photogrammetry through the structure from motion method (SFM) with terrestrial three-dimensional (3D) laser scanning (TLS), Maelstrom Cave on Big Island, Hawaii (USA), was mapped in three dimensions. The complementary properties of the two methods generated an overall model that depicted significant features of the cave both spatially and visually. Through various processes, the complex geometric quantities were derived from the model that can be used to answer microbiological and climatological questions. In this report, the procedure for the three-dimensional acquisition of the terrain surface above Maelstrom Cave as well as the interior of the cave with TLS and SFM is described. It is shown how the different data sets were combined and contrasted, including a comparison of geometries from the different survey operations. Finally, the editing processes used to quantify and simplify the cave geometry are presented, as well as the analysis of the ellipses generated accordingly to determine the geometric quantities. Through the analysis of the cave geometry, important geometric properties of the Maelstrom Cave could be quantified and categorized. In this way, an effective tool was developed to directly correlate the structure of the cave system with climatological and microbiological parameters in order to answer the corresponding questions.}, language = {en} } @article{KoegelDasMarszelewskietal.2017, author = {K{\"o}gel, Michael and Das, Apurba and Marszelewski, Włodzimierz and Carstensen, Dirk and Lindenschmidt, Karl-Erich}, title = {Machbarkeitsstudie zur Vorhersage von Eisstau auf der Oder}, series = {WASSERWIRTSCHAFT}, volume = {107}, journal = {WASSERWIRTSCHAFT}, number = {5}, publisher = {Springer Science and Business Media LLC}, issn = {0043-0978}, doi = {10.1007/s35147-017-0045-0}, pages = {20 -- 28}, year = {2017}, abstract = {In dieser Studie wird die Umsetzbarkeit verschiedener Methoden zur Analyse von Eisbildung auf der Oder erl{\"a}utert. Die Untersuchungen schließen Auswertungen von Sentinel-1-Satelliten-Aufnahmen, die Simulation von Eisbildung mit dem Programm RIVICE und den Abgleich der gewonnenen Daten mit einem digitalen Gel{\"a}ndemodell (DGM) ein. Auf Basis dieser Studie soll ein neuer Leitfaden f{\"u}r die Prognose von Eisstauereignissen auf der Oder entwickelt werden, um notwendige Schritte zur Vermeidung von {\"U}berflutungen infolge von Eisstau einleiten zu k{\"o}nnen.}, language = {de} } @article{PohlCarstensenAufleger2022, author = {Pohl, Reinhard and Carstensen, Dirk and Aufleger, Markus}, title = {Verbleibendes Risiko und Notfallpl{\"a}ne f{\"u}r Talsperren, Hochwasserr{\"u}ckhalte- und Speicherbecken}, series = {Wasserwirtschaft}, volume = {112}, journal = {Wasserwirtschaft}, number = {9}, publisher = {Springer Science and Business Media LLC}, issn = {0043-0978}, doi = {10.1007/s35147-022-1113-7}, pages = {12 -- 19}, year = {2022}, language = {de} } @article{Carstensen2021, author = {Carstensen, Dirk}, title = {Talsperren - elementare Bauwerke zur Sicherung unserer Zukunft}, series = {Wasserwirtschaft}, volume = {111}, journal = {Wasserwirtschaft}, number = {9/10}, publisher = {Springer Science and Business Media LLC}, issn = {0043-0978}, doi = {10.1007/s35147-021-0904-6}, pages = {94 -- 95}, year = {2021}, language = {de} }