Magnetic Surveying Instrument
Definition - What does Magnetic Surveying Instrument mean?
A Magnetic Surveying Instrument is a magnetometer that is used for measuring the magnetization of magnetic materials such as ferromagnets. It is also used in measuring the strength and the direction of a magnetic field in some cases at a point in space. It is widely and most commonly used for measuring the magnetic field of the Earth and detecting the magnetic anomalies of several types in the geophysical surveys. It is used in the magnetic surveys which are among the number of methods that are used in the archaeological geophysics. These surveys are used to record the spatial variation on the magnetic field of the Earth.
Petropedia explains Magnetic Surveying Instrument
The Magnetic Surveying Instrument is used in geophysical surveys that use single sensors for measuring the total strength of a magnetic field. It may use two or more than two sensors for measuring the magnetic field gradient. The gradiometer configurations are preferred in most of the archaeological applications as they provide better resolution of the small and near surface phenomena. They are also used as metal detectors as they only detect magnetic metals. But they can detect these metals at much larger depth as compared to the conventional metal detectors. They are adept in detecting large objects like cars at even tens of meters, whereas the metal detectors can detect the metals rarely more than two meters.