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New ‘digital map’ turns earth crust’s magnetic signature-measuring global

New 'digital map' turns earth crust's magnetic signature

 

Measuring the Earth’s crust’s magnetic signature is no new for the geologists. They have been doing this for decades, but by a multitude of groups. But, it was not easy to view a truly worldwide phenomenon using groups. So, of late, the data has been combined for the first time.

In a bid to learn more about our planet’s geological composition, and assemble the Earth’s magnetic signatures, an international team of researchers have created the first global map of magnetic peculiarities (or anomalies) — caused by differences in the rocks’ magnetization in the crust of the Earth.

Named, the World Digital Magnetic Anomaly Map’ or WDMAM, the map is available through the Commission for the Geological Map of the World. To avoid the data’s commerciality from being effected, many companies and country organizations holding the data in a confidential mode were ready to release their ‘decimated versions’.

This magnetic anomaly field can effectively be used in prospecting and resource analysis, making it one of the most valuable tools. The map can give a clear picture of how the sea floor spreads apart in mid-ocean.

The magnetic data gathered using the anomaly map, not only help measure the Earth’s magnetic field, but also the Earth’s crustal field’s very long wavelength components, having wavelengths greater than about 400 km. This anomaly map is surely a breakthrough in the field of geological studies.

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