Laboratories

Sedimentology

Aim:

  • Study of transport and accumulation of permafrost-related deposits
  • Classification of sediment sequences in general

Parameters:

  • Sediment structure description
  • Grain-size distribution
  • Mass specific magnetic susceptibility

Laboratory Equipment:

  • Sample preparing (freeze drying, grinding, splitting)
  • Particle size analysis (2x ATM Sonic Sifter, 2x Gil Sonic for dry and wet screening, Atterberg-Method), Laser grain size measuring instrument  (Malvern Mastersizer 3000, LS Coulter 200)
  • Microscopy: binocular and polarization microscopes
  • Preparation for clay mineral studies
  • Heavy mineral separation

Head

Lutz Schirrmeister

Technical Staff

Dyke Scheidemann

 

 

 

 

Carbon / Nitrogen

Aim:

  • Characterization of carbon and nitrogen vulnerability in thawing permafrost
  • Carbon and nitrogen quantification and paleo-environmental reconstruction

Parameters:

  • Bulk carbon + nitrogen, total organic carbon

Future Expansion:

  • Lipid biomarkers (e.g. alkanes, fatty acids, alcohols)
  • Gas production concentrations after incubation

Head

Jens Strauss

Technical Staff

Dyke Scheidemann

 

 

 

 

Hydrochemistry

Aim:

  • Analysis of surface and ground water, pore water, seawater, snow and ice samples, and water extracts for water chemistry.
  • Hydrochemical characterisation of permafrost regions.


Parameters:

  • Electrical conductivity, alkalinity, pH
  • Dissolved ions, dissolved carbon, and element concentrations.

Laboratory Equipment:

  • ICP-OES Optima 8300 DV (Perkin Elmer):  Measurement of cations in diverse liquid solutions.
  • Ionen-Chromatograph DX 320 (Dionex/Thermo Fisher Scientific GmbH): Measurement of anorganic anions in various aquatic solutions using electrical conductivity detection.
  • TOC-VCPH (Shimadzu):  Measurement of total and dissolved carbon, inorganic carbon, and organic carbon (non purgeable carbon for the latter).
  • Automatic Titration System „794 Basic Titrino“  (Metrohm):  Measurement of alkalinity / bicarbonate via potentiometric pH value.
  • WTW Multi 540:  Measurement of pH and electrical conductivit in aquatic solutions.
  • Standard laboratory equipment:  MQ system (Millipore Advantage A10) for productino of ultrapure water, drying ovens, analytical balance, precision scales, fume hoods, muffle furnace.

Head

Paul Overduin

Technical Staff

Antje Eulenburg

Soil Physics

Aim:

  • Calibration, testing and quality control of meteorological and soilphysical sensors for polar environments in long-term observations
  • Experimental bridge between field observations and numerical modelling; testing and unravelling complex physical processes

Parameter:

  • Soil physical and thermal properties of undisturbed and artificial samples (i.e. porosity, thermal and hydraulic conductivity)

Laboratory Equipment:

  • Climatic chamber (1000 liter, temperature range: -72 to +180 ° C, humidity range: 10 to 98% rh)
  • Universal Oven (260 liter, temperature range: +30 to +300 °C)
  • Various sensors (temperature, soil moisture, soil heatflux, electric conductivity,   etc.) for experimental setups
  • Electronics workshop for production and operation of various measurement systems

Head

Julia Boike

Technical Staff

Niko Bornemann

Peter Schreiber

 

 

 

 

Remote Sensing

Aim:

  • Quantification of  permafrost landscape change
  • Upscaling field measurements
  • Products suitable for model parametrization and validation

Parameters:

  • Land cover changes and trends
  • Thermokarst, erosion, and other disturbance dynamics
  • Surface deformation

 

 

Head

Guido Grosse

Technical Staff

Sebastian Laboor