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Project B7


formerly A1

Soil structure and mass transfer with NMR: From pore-scale patterns to meter-scale hydraulics

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Research Area:
Hydrology, Physical Chemistry


project b7

  • Characterization of soil structures, patterns and their influence on water transport in the vadose zone by means of nuclear magnetic resonance (NMR).
  • Non-invasive technique for
    • distribution and pore-scale transport of soil moisture
    • soil texture and (centi)meter-scale soil hydraulics characterized by NMR relaxation times
    • imaging (MRI) of macropore structures and matrix water in soil cores
  • Bridging the gap between pore-scale and macro-scale soil hydraulics empirically
  • Data base for modelling
  • NMR soil-typing primarily performed in laboratory environments using home-built NMR hardware, such as the NMR MOUSE, a single-sided sensor and profiler (Slim Line Logging Tool, SLL, Figure 1), and Halbach arrays for volumetric measurements.
  • New combi-sensor (SLL Mark II) for simultaneous measurement of NMR relaxometry, water potential, and electrical impedance, cooperation with B8 (N. Klitzsch, RWTH Aachen)
  • 5 workpackages:
    • WP 1: In situ NMR characterization of soil hydraulics and patterns in the vadose zone. NMR relaxometry of systematically sampled soil cores, and monitoring of the formation of thin dry insulating layers hindering further evaporation by a single sided NMR sensor
    • WP 2: Assessment of dual matrix and macropore flow in soil cores. NMR relaxometry and imaging (MRI) of soil cores. Development of a procedure for discrimination by analysis of relaxation times.
    • WP 3: Joint NMR and (S)IP logging – Bridging pore-scale and meter-scale soil hydrology
    • WP 4: Modelling of matrix and macropore flow on the basis of data gained in WPs 1-3: How important is macropore flow for the overall water balance?
    • WP 5: Joint interpretation of NMR and other geophysical data


Cooperation partner:
Projects: B6, B8, D7, Z4, T1

  • B.J.Balcom (New Brunswick, CAN)
  • P. Galvosas (Wellington)
  • A. Pines (UC Berkeley)
  • J. Reimer (UC Berkeley)
  • Rodolfo Acosta (Universidad Nacional de Córdoba)

5 Member(s):

Markus Küppers

Dr.
Markus Küppers
Scientist
in B7

RWTH Aachen
Department of Macromolecular Chemistry

Worringerweg 2
52074 Aachen
Germany

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+49 (0)241-8026971
+49 (0)241-8022185
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kueppers@itmc.rwth-aachen.de

 

 

Bernhard Blümich

Prof. Dr. Dr. h.c.
Bernhard Blümich
Principal Investigator
in A1, B7

RWTH Aachen
Macromolecular Chemistry

Sammelbau Chemie - Worringer Weg 1
52056 Aachen
Germany

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+49 (0)241 80 26421
+49 (0)241 80 22185
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bluemich@itmc.rwth-aachen.de

 

 

Andreas Pohlmeier

Dr.
Andreas Pohlmeier
Principal Investigator
in A1, B7

FZ Jülich
Institute of Bio- & Geosciences
Agrosphere (IBG-3)

52425 Jülich
Germany

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+49 (0)2461 61 2795
+49 (0)2461 61 2518
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a.pohlmeier@fz-juelich.de

 

 

David Caterina

Dr.
David Caterina
Scientist
in B7

FZ Jülich
Institute of Bio- & Geosciences (IBG)
Agrosphere (IBG-3)

52452 Jülich
Germany

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+49 (0)2461 61 1796

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d.caterina@fz-juelich.de

 

 

Xin Cai

Master of polymer chemistry
Xin Cai
Ph.D. Student
in A1, B7

RWTH Aachen University
Macromolecular Chemistry

Worringerweg 2
52074 Aachen
Germany

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+49 (0)241 80 26423

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Cai@itmc.rwth-aachen.de

 

 


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