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42 votes
Accepted

Where on Earth is the magnetic field intensity stronger?

If we consider only the magnetic field generated by natural sources, and not the ones generated by human activities. The general trend is that higher intensities of the magnetic field happen close to ...
Camilo Rada's user avatar
  • 17.7k
19 votes
Accepted

What was the highest temperature ever recorded on the surface of Earth?

The record the article is referring about seems to be the same as registered at Guiness World Records: On 13 September 2012 the World Meteorological Organisation disqualified the record for the ...
Camilo Rada's user avatar
  • 17.7k
13 votes

Where on Earth is the magnetic field intensity stronger?

Since it is not specified in the question (and to complement the other answer), the strongest magnetic fields on Earth are not naturally generated, but artificially. The current world record holder ...
Graipher's user avatar
  • 331
11 votes

Why did "Glaciologist Princess Elsa" have to leave the glacier because it was too warm?

I'm the scientist in the article; someone just saw this question and emailed me about it! (I'm on as a guest here since I don't have an account, so you'll hopefully trust it's me. Even if you don't ...
Celeste's user avatar
  • 111
10 votes

How do the pros measure humidity?

The WMO report Instruments and Methods of Observation has a chapter on Measurement of humidity and a separate chapter on Measurement of upper-air pressure, temperature, humidity. The first deals with ...
M Juckes's user avatar
  • 772
8 votes
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SEGD and SEGY recorded data

SEG-D is a specialized format, while SEG-Y is a general-purpose format. In general, SEG-D is intended for field recordings of seismic data, and SEG-Y is intended for 'seismic data exchange'. Having ...
Matt Hall's user avatar
  • 11k
6 votes

What was the highest temperature ever recorded on the surface of Earth?

Note that in addition to Camilo's answer, Wikipedia links to a peer reviewed BAMS article noting that: Satellite measurements of ground temperature taken between 2003 and 2009, taken with the MODIS ...
JeopardyTempest's user avatar
6 votes

What was the highest temperature ever recorded on the surface of Earth?

The Hadean era covers the time from the formation of the Earth until 4bn years ago. It was characterized by a surface of molten rock, due to repeated meteor strikes, volcanism and radioactive decay. &...
Boodysaspie's user avatar
6 votes

How do the pros measure humidity?

We use something like an Onset HOBO electronic sensor. They've got logging (and in some cases, networking) built in. They'll typically log both temperature and relative humidity at regular intervals ...
410 gone's user avatar
  • 4,080
5 votes
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Rainbow dynamics?

Short answer: the refraction of light is ultimately dependent on both temperature and exact composition of the medium (e.g., liquid water or ice) through which it passes. Note: strictly speaking, "...
dplmmr's user avatar
  • 1,144
4 votes
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Are there "transparent" clouds?

Are there "transparent" clouds? Yes. One type is called subvisible cirrus clouds. They're essentially clouds that are very, very thin. According to Reverdy et al. (2012): Spaceborne lidar ...
gerrit's user avatar
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4 votes
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How are data from tiltmeters used to monitor volcanic activity?

Tiltmeters placed on the flanks of an active volcano can measure changes in the slope angle of the flank. These changes are often inferred to be related to changes in the shape and activity of the ...
user7939's user avatar
4 votes
Accepted

Where on Earth is the highest none polar magnetic fields?

In other words where might be a natural place on Earth that would over power a compass and then some Just about anywhere where the rocks are rich in iron. This would occur near iron ore, basalt, ...
Gimelist's user avatar
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3 votes
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Earth magnetic field, WMM/IGRF

I am most familiar with IGRF. One simple way is to evaluate IGRF using only the dipole terms, and compare that to the field that you get from the quadrupole and higher order terms. There is publicly ...
Johan D Sahr's user avatar
3 votes

How does a whirling hygrometer work, how does it differ from static dry/wet bulb thermometer, and how to obtain humidity from its readings?

Instead of «whirling thermometer» you probably refer to «sling psychrometer» consisting of a dry-bulb thermometer and a wet-bulb thermometer. Yet, different to a static wet-bulb thermometer shown in ...
Buttonwood's user avatar
3 votes
Accepted

What was the lowest temperature ever recorded on the surface of Earth?

The wikipedia article List of weather records explicitly states This list does not include remotely sensed observations such as satellite measurements, since those values are not considered ...
David Hammen's user avatar
  • 23.6k
3 votes
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How to make, read, and calibrate a ping-pong ball anemometer?

The drag coefficient varies with Reynolds number and hence with wind speed. Most fluid-dynamics textbooks have a graph of the drag coefficient of a sphere versus Reynolds number. Hopefully that could ...
Jack Denur's user avatar
2 votes
Accepted

Is astrochronology a proper method?

Yes it is used and it works. I've heard varying viewpoints on it's accuracy and dependability though. I remember my earth science lecturers were in three camps with it: one felt that the dates weren'...
Ash's user avatar
  • 4,260
2 votes

Young researcher hoping to volunteer for Antarctica fieldwork

Try the long game: Start reading up on the research that is being done. For the interesting ones, start corresponding with the authors asking questions about the work. They have to be good ...
Sherwood Botsford's user avatar
2 votes

How do the pros measure humidity?

The Bureau of Meteorology in Australia traditionally uses wet and dry bulb thermometers read by humans, when measuring temperature. However, for remote automated weather stations, electrical equipment ...
Fred's user avatar
  • 24.7k
2 votes

Transmitter receiver coil separation for Electromagnetic Terrain Conductivity Measurement

As described in the question there are two similar coils, one radiates the AC magnetic field ("transmitter") and the other picks up the weak radiated AC magnetic field produced by subsurface ...
uhoh's user avatar
  • 7,148
2 votes

Weather station data

If you are trying to do a model skill assessment, then the best way is to try to use observations that have a similar footprint to the model. I would recommend you try remote sensed data. A good place ...
arkaia's user avatar
  • 15.4k
2 votes

How is land subsidence measured?

Land that has been heavily disturbed by humans in most developed countries, such as urban and rural regions will have been surveyed for topographical & sub-division purposes. Such data allows for ...
Fred's user avatar
  • 24.7k
1 vote

Will a Mohs hardness scratch pen need to be replaced or resharpened?

I'm sure there are cheaper versions for it. But to answer your question, it's more of a investment for a lifetime and no need to worry about buying new ones in the next 20-30 years.
user28724's user avatar
1 vote

What instrumentation and/or measurement is likely being shown in this video of giant Siberian craters/sinkholes?

It looks like a geophysical method. But a wide variety of such methods have been applied to the Yamal crater by Olenchenko et al. (2015): The complex of geophysical survey techniques included ...
Jean-Marie Prival's user avatar
1 vote

How is land subsidence measured?

Several methods are employed to measure ground subsidence: Spirit leveling, GPS (GNSS), Remote Sensing, Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging to name a few. In the case of ...
FSimardGIS's user avatar

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