Skip to main content
6 votes

Is there a "submerged object" in Australia that causes a magnetic deviation of 20 degrees?

I'll disagree with Camilo Rada's answer, and show that there is definitely a magnetic anomaly. We start with the interactive geophysics map of Geoscience Australia, Australia's federal geoscience ...
Gimelist's user avatar
  • 23.1k
5 votes

Is there a "submerged object" in Australia that causes a magnetic deviation of 20 degrees?

The Mount Jim in your map seem to be the one located at 36° 55' 17" S and 147° 13' 01" E. Although, magnetic anomalies are not mapped over the whole worlds, the World Digital Magnetic Anomaly Map ...
Camilo Rada's user avatar
  • 17.7k
4 votes

Identifying dense magnetic rock with tubular features

The items look like slag, the dumped wasted product of metal smelting. The high density suggests a high metal content. The magnetic properties suggests a significant iron content and the smooth curved ...
Fred's user avatar
  • 24.7k
3 votes

How do I find the Datum (Diurnal Correction) number for a Magnetometer

I have used the GEM magnetometers for 25 years as a professional geophysicist. You can use the total field intensity of an IGRF model, or you can use the average value of all of the readings of the ...
Alexandar Jelenic's user avatar
2 votes

Crustal magnetic field of the Earth

This very much depends on what you mean by "accurate"! Two options for a consistent, globally gridded, map of crustal magnetic field scalar anomalies are the World Digital Magnetic Anomaly ...
WJB's user avatar
  • 976
2 votes

Can paleomagnetic techniques determine the exact direction of Earth's magnetic poles in the past, not just their polarity?

An important distinction is what kind of magnetic pole we're talking about. The "exact direction of Earth's magnetic poles", would be the dip poles, and no, we can't determine these as we ...
WJB's user avatar
  • 976
2 votes

How accurate are paleomagnetic orientation measurements?

When core samples are taken in the field, their orientation must first be measured, generally with standard field tools such as a Brunton. These high quality, professional compasses are good to +/- 1 ...
Knob Scratcher's user avatar
2 votes

Is there a high-temperature, non-magnetic glue that doesn't dissolve in water?

Your question is quite similar to one that I asked some time ago, with the additional requirement that the glue be insoluble in water, which unfortunately excludes sodium and potassium silicate. Like ...
Pont's user avatar
  • 5,429
1 vote

Can living where magnets are abundant provide a mini-magnetoshere?

Near to the Earth's surface there are small variations in the Earth's magnetic field, but these don't play a role in providing the magnetosphere which protects the Earth from charged particles ...
Michael Walsby's user avatar

Only top scored, non community-wiki answers of a minimum length are eligible