Zobrazeno 1 - 10 of 74 pro vyhledávání: '"Helga Wiederhold"'
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Akademický článek
Airborne Electromagnetic, Magnetic, and Radiometric Surveys at the German North Sea Coast Applied to Groundwater and Soil Investigations
Autor: Bernhard Siemon, Malte Ibs-von Seht, Annika Steuer, Nico Deus, Helga Wiederhold
Publikováno v: Remote Sensing, Vol 12, Iss 10, p 1629 (2020)
The knowledge of the subsurface down to about one hundred meters is fundamental for a variety of economic, ecological, and geoscientific tasks, particularly in coastal zones. Marine and terrestrial processes influence coastal zones and both seawater
Externí odkaz: https://doaj.org/article/b332790cff1c48b1a054d12b73817933
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2
Current and future state of groundwater salinization of the northern Elbe-Weser region
Autor: Jörg Elbracht, M. Azizur Rahman, Helga Wiederhold, Eva González, Nico Deus
Publikováno v: Grundwasser. 26:343-356
Salinization of the upper aquifer of the northern Elbe-Weser region almost extends to the surface. Chloride content exceeds 250 mg/l and the groundwater is therefore, according to the German Drinking Water Ordinance, not suitable as drinking water. T
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5fd6aef199899bbf095db76eaaa14579
https://doi.org/10.1007/s00767-021-00496-w
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3
Modellierung der küstennahen Grundwasserversalzung in Niedersachsen abgeleitet aus aeroelektromagnetischen Daten
Autor: Helga Wiederhold, Bernhard Siemon, Jörg Elbracht, Eva González, Nico Deus, Annika Steuer
Publikováno v: Grundwasser. 26:73-85
ZusammenfassungDie Bundesanstalt für Geowissenschaften und Rohstoffe (BGR) führte in den Jahren 2000–2014 umfangreiche (etwa 5900 km2) aerogeophysikalische Erkundungen an der niedersächsischen Nordseeküste durch. Die Aeroelektromagnetik liefert
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::871ba3389852b2033709a6f88a5b0eaf
https://doi.org/10.1007/s00767-020-00472-w
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4
Coastal groundwater systems: mapping chloride distribution from borehole and geophysical data
Autor: Nico Skibbe, Nico Deus, Jörg Elbracht, Bernhard Siemon, Eva González, Helga Wiederhold, Reinhard Kirsch, Qian Zhao, Mohammad Azizur Rahman
Publikováno v: Grundwasser. 26:191-206
Information on chloride (Cl) distribution in aquifers is essential for planning and management of coastal zone groundwater resources as well as for simulation and validation of density-driven groundwater models. We developed a method to derive chlori
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35e7c4c36f48a2c2ec69258b7976d7e2
https://doi.org/10.1007/s00767-021-00475-1
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5
Monitoring freshwater–saltwater interfaces with SAMOS – installation effects on data and inversion
Autor: Thomas Günther, Helga Wiederhold, Mathias Ronczka, M. Grinat
Publikováno v: Near Surface Geophysics. 18:369-383
A major problem for the freshwater supply of coastal regions is the intrusion of saltwater into aquifers. Due to extensive extraction of freshwater to suffice increasing drinking water demands and/or in periods of reduced groundwater recharge, the eq
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02cb2fa17b003fc82715c5ad4946ca21
https://doi.org/10.1002/nsg.12115
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9
P- and S-wave reflection profiling for near-surface investigation of glacial sediments
Autor: Helga Wiederhold, Genet Tamiru
Publikováno v: Journal of Applied Geophysics. 183:104216
In glacial sediments, interpolation between boreholes is often difficult due to non-uniform layering. On the other side, the knowledge on groundwater covering layers and the architecture of groundwater relevant structures is inevitable for sustainabl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::60b45295b2bfbbb3c974e756f1fafa3d
https://doi.org/10.1016/j.jappgeo.2020.104216
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10
Modeling saltwater intrusion scenarios for a coastal aquifer at the German North Sea
Autor: J. Wolf, Helga Wiederhold, Anke Schneider, H. Zhao, Malte Eley, Sebastian Reiter, Dmitriy Logashenko, M. Howahr, Marlene Gelleszun
Publikováno v: E3S Web of Conferences, Vol 54, p 00031 (2018)
A 3d regional density-driven flow model of a heterogeneous aquifer system at the German North Sea Coast is set up within the joint project NAWAK (“Development of sustainable adaption strategies for the water supply and distribution infrastructure o
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8df8d6077e395589572a1a06ef5e75d1
http://publikationen.ub.uni-frankfurt.de/files/50116/e3sconf_swim2018_00031.pdf
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