Economics

Economics

1. Seismic Survey

2. Borehole

   • a deep, narrow hole made in the ground, especially to locate water or oil.
   • A narrow tube that digs deep to collect a rock sample of the ground beneath

3. Geochemical Analysis

   • Geochemical analysis can predict where petroleum, metals, water, and commercially valuable minerals can be located—a branch of the science known as geochemical prospecting.

4. Magnetic Survey

   • Magnetic surveys record spatial variation in the Earth's magnetic field. In archaeology, magnetic surveys are used to detect and map archaeological artefacts and features.
   • An aeromagnetic survey is a common type of geophysical survey carried out using a magnetometer aboard or towed behind an aircraft.
     • The principle is similar to a magnetic survey carried out with a hand-held magnetometer, but allows much larger areas of the Earth's surface to be covered quickly for regional reconnaissance.
       • The aircraft typically flies in a grid-like pattern with height and line spacing determining the resolution of the data (and cost of the survey per unit area).

Bilder und Dateien der Mindmap