Ground-penetrating radar

Bild vom Ground-penetrating radar

Ground-penetrating radar

Hardware

• MALA RAMAC/GPR Control Unit II (CU II)

• 25, 50, 100, 200 MHz Unshielded Antennas

• 250, 500 MHz Shielded Antennas

• Panasonic Toughbooks CF-18 and CF-29 for data acquisition and analysis

Software

• RAMAC Ground Vision for data acquisition

• REFLEXW for data analysis

Methodological principle

Ground-penetrating radar is a technique that uses high-frequency electromagnetic waves to acquire information on subsurface composition. The electromagnetic pulse is emitted from a transmitter antenna and propagates through the subsurface at a velocity determined by the dielectric properties of the subsurface materials. The pulse is reflected by inhomogeneities and layer boundaries and is received by a second antenna after a measured travel time (Schrott and Sass, 2008, Geomorphology).

Bild einer Auswertung vom GPR

DC resistivity

Bild von DC resistivity

DC resistivity

Hardware

• GeoTomMK1E100 RES/IP/SP

• 110 Electrodes

• up to 400m profile length with 4m electrode spacing

• Panasonic Toughbooks CF-18 and CF-29 for data acquisition and analysis

Software

• GeoTom 7.x for data acquisition

• RES2DINV, RES3DINV, DC2DInvRes and BERT for data analysis

Methodological principle

Ground-penetrating radar is a technique that uses high-frequency electromagnetic waves to acquire information on subsurface composition. The electromagnetic pulse is emitted from a transmitter antenna and propagates through the subsurface at a velocity determined by the dielectric properties of the subsurface materials. The pulse is reflected by inhomogeneities and layer boundaries and is received by a second antenna after a measured travel time (Schrott and Sass, 2008, Geomorphology).

Bild von der Auswertung vom DCR

Refraction seismic

Bild eines Refraction seismic Gerätes

Refraction seismic

Hardware

• Geometrics Geode 24 channel seismograph

• 24 geophones with 14 Hz

• 48 geophones with 10 Hz

• 6 Cables with take outs of 5 - 10 m

• Panasonic Toughbook CF-29 and CF 18 for data acquisition and analysis

Software

• Seismodul control for data acquisition

• REFLEXW for data analysis

Methodological principle

The principle of seismic refraction is based on elastic waves travelling through different subsurface materials, such as sand, gravel, and bedrock, at different velocities. The denser the material, the faster the waves travel. On the basis of measured apparent velocities conclusions about subsurface structures can be drawn (Schrott and Sass, 2008, Geomorphology).

Bild einer Auswertung des Refrations seismic Gerät
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