Deutsch
 
Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
Zur Ablage hinzufügen
  Lokale TagsFreigabegeschichteDetailsÜbersicht

Freigegeben
Zeitschriftenartikel

The Footprint Characteristics of Cosmic Ray Thermal Neutrons

Urheber*innen

Jakobi,  J.
External Organizations;
TERENO, Deutsches GeoForschungsZentrum;

Huisman,  J. A.
External Organizations;
TERENO, Deutsches GeoForschungsZentrum;

Köhli,  M.
External Organizations;
TERENO, Deutsches GeoForschungsZentrum;

/persons/resource/drasche

Rasche,  Daniel
4.4 Hydrology, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
TERENO, Deutsches GeoForschungsZentrum;

Vereecken,  H.
External Organizations;
TERENO, Deutsches GeoForschungsZentrum;

Bogena,  H. R.
External Organizations;
TERENO, Deutsches GeoForschungsZentrum;

Externe Ressourcen
Es sind keine externen Ressourcen hinterlegt
Volltexte (frei zugänglich)

5008241.pdf
(Verlagsversion), 2MB

Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Jakobi, J., Huisman, J. A., Köhli, M., Rasche, D., Vereecken, H., Bogena, H. R. (2021): The Footprint Characteristics of Cosmic Ray Thermal Neutrons. - Geophysical Research Letters, 48, 15, e2021GL094281.
https://doi.org/10.1029/2021GL094281


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5008241
Zusammenfassung
The advance of the cosmic ray neutron (CRN) sensing method for estimating field scale soil moisture relied largely on simulations of the footprint properties of epithermal neutrons (∼0.5 eV–100 keV). Commercially available CRN probes are usually additionally equipped with a thermal neutron (<0.5 eV) detector. The potential of these measurements is rarely explored because relevant features of thermal neutrons, such as the footprint and the sensitivity to soil moisture are unknown. Here, we used neutron transport modeling and a river crossing experiment to assess the thermal neutron footprint. We found that the horizontal thermal neutron footprint ranges between 43 and 48 m distance from the probe and that the vertical footprint extends to soil depths between 10 and 65 cm depending on soil moisture. Furthermore, we derived weighting functions that quantify the footprint characteristics of thermal neutrons. These results will enable new applications of thermal neutrons.