Korean Ver.







   Paleo- and Environmental magnetism

The purpose of the paleomagnetic studies at our laboratory is to aid in solving various geological
   problems by means of the paleomagnetic and rock magnetic information recorded in geological
   materials. We work in close collaboration with researchers in tectonics, sedimentology,
   stratigraphy, volcanology and archaeology, and attribute to following fields:

1. Paleogeographic reconstructions.
     2. Tectonic applications (regional and local tectonic movements and rotations).
     3. Magnetostratigraphy (stratigraphic correlations and dating).
     4. Archaeomagnetism (age dating of archaeological sites).

   Environmental magnetism
Research for environmental magnetism in our laboratory has three principal objectives.
   1. To discriminate the source of toxic heavy metals in soils, lake sediments, atmospheric
    particulate matters and urban roadside dusts based on the magnetic properties.
   2. To outline the extent of contaminated area around the potential source of pollution
    (e.g., power plant, airport, shooting area for military forces and metalworking industry) using
    the magnetic susceptibility measurements.
   3. To delineate the source area of the Asian Dust (Yellow dust) which has exert a bad influence
    on atmospheric environments in Seoul.

   Geophysical Exploration (Environmental Geophysics)

 Among the well-known geophysical methods, we mainly employ seismic refraction, DC resistivity
   and magnetic methods to survey following target areas:
   1. Environmentally hazardous sites
    - We focus on DC resistivity method to survey the leakage extent of waste deposit and the
    infiltrated range of sea water into ground water.
   2. Constructing sites of tunnel and/or underground space
    - We survey subsurface structures such as continuity of fractures and depth of fresh base rock,
    using seismic refraction method.
   3. Archaeological remains
    - Magnetic survey makes it possible to detect relatively narrow area of the buried archaeological
    remains from the wide field.