Is gradiometer the same as magnetometer?

The gradiometer, an instrument that is an adaptation of the conventional magnetometer, gives the gradient of the magnetic field. The gradient is especially useful for detecting objects buried at shallow depth (the gradient is the quantity measured by magnetic locators used in land surveying).

What are magnetometers?

magnetometer,, instrument for measuring the strength and sometimes the direction of magnetic fields, including those on or near the Earth and in space. Magnetometers are also used to calibrate electromagnets and permanent magnets and to determine the magnetization of materials.

What is a magnetic gradiometer?

A gradiometer is a special measuring instrument that consists of more than one (usually two, rarely three or four) magnetometers. The differences between the readings of the sensors are seen as an approximation to the gradient of the magnetic field along their alignment.

What is a gradiometer used for?

A gradiometer measures the gradient (numerical rate of change) of a physical quantity, such as a magnetic field or gravity.

How deep can a magnetometer go?

In a general sense, the exploration depth of a magnetometer is unlimited. It is certainly sensitive to the Earth’s field and this is generated in the Earth’s Core, some 5000 km beneath our feet.

How many types of magnetometers are there?

There are two basic types of magnetometer measurement. Vector magnetometers measure the vector components of a magnetic field. Total field magnetometers or scalar magnetometers measure the magnitude of the vector magnetic field.

How does a magnetic gradiometer work?

Types of gradiometer This device consists of two magnetometers placed in series (i.e., one above the other). The result coming from the device is the difference in magnetic flux at that point in space, in other words, the result is the difference between what each of the magnetometers detects.

How does a gradiometer work?

The gradiometer is a magnetometer which measures the change in the magnetic field (the gradient of the field). Compared to a magnetometer this increases the measurement accuracy and the sensitivity to regional changes of the Earth’s magnetic field. Both measuring systems can also be used on the water.

What is a fluxgate magnetometer used for?

Fluxgate magnetometers are used in geological navigation methods, including global positioning systems. They are also used in detecting slow-moving magnetic fields, and super-low-power applications. Paired in a gradiometer configuration, fluxgate magnetometers are widely used in surveys related to archaeology.