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Earth Science

Questions tagged [field-measurements]

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26 questions
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2 votes
1 answer
153 views

My question is about World Magnetic (WMM) and International Geomagnetic Reference Field (IGRF) models. It is well known that to a first approximation, earth magnetic field is a field of dipole. It ...
Emma Anderson's user avatar
  • 23
7 votes
1 answer
121 views

I am considering buying a set of Mohs hardness scratch pens (aka hardness picks). As a hobbyist the price is quite high, starting at 300 USD and upwards for a complete set. I can accept this price if ...
Mads Skjern's user avatar
  • 171
3 votes
1 answer
71 views

I am currently setting up a wind-wave model for which I need to input the wind forcing for the whole domain. I have obtained the wind speed and direction from two sources: CFSv2 and ERA5. ...
Rik's user avatar
  • 133
3 votes
0 answers
35 views

Where can I find Free Swell Index data for Clays for the Cambridgeshire region, United Kingdom? Surely this must have been performed at some point even though there are more sophisticated tests. I've ...
onepound's user avatar
  • 131
1 vote
0 answers
61 views

There is a 210 cm long soil column that has five layers of different soil types. The topsoil layer of 15 cm has a moisture sensor in the middle. The second and third layers are of 95 and 80 cm of ...
Alireza Amani's user avatar
  • 217
2 votes
1 answer
1k views

Answers to my previous question How is relative humidity determined from a wet and dry bulb readings? provide equations for converting the two temperature measurements to a relative humidity. In ...
uhoh's user avatar
  • 7,064
3 votes
1 answer
81 views

The RT video The Permafrost Mystery: scientists explore giant Yamal Sinkhole (with English subtitles) shows scientists exploring the formation. In one scene after about ...
uhoh's user avatar
  • 7,064
1 vote
0 answers
39 views

Cleaning data and turning it into a useable format that can be integrated with other datasets is a time-consuming task that earth scientists face when using sensor data. Most sensors output data in a ...
alex_danielssen's user avatar
  • 428
8 votes
3 answers
487 views

I have used a wet/dry bulb setup to estimate humidity, and it appears that the Argentinian meteorological service uses one in Antarctica as well. Wikipedia sez: Humidity measurement is among the ...
uhoh's user avatar
  • 7,064
5 votes
4 answers
679 views

When groundwater is pumped out of the ground by wells, and not replenished fast enough, the groundwater level sinks. With it, the surface of the area sinks also. Locally, this effect is not apparent,...
Volker Siegel's user avatar
  • 679
4 votes
1 answer
152 views

This tweet shows "Glaciologist Princess Elsa" is actually Caltech geophysics PhD student and cryoseismologist Celeste Labedz. The BBC News article What's a 'Science Princess' doing in an ice field in ...
uhoh's user avatar
  • 7,064
2 votes
0 answers
50 views

I stumbled upon this new device called Teralytic. Which can measure salination, NPK values and all sorts of things. Unfortunately it's sold out and I think when it'll be available again rather ...
Cowboy_Patrick's user avatar
  • 21
3 votes
1 answer
210 views

Why increasing transmitter-receiver coil separation in EM survey (EM31, also here) increases depth of penetration? Suppose there is a horizontal flat conductive layer underneath a flat resistive ...
David's user avatar
  • 31
3 votes
2 answers
1k views

This article Lowest recorded temperatures lists a -89 Degrees Celsius in Vostok, Antartica as the lowest recorded temperature. However, this other article List of weather records lists a −93.2 °C (−...
Pablo's user avatar
  • 1,157
1 vote
2 answers
175 views

I am a postdoctoral scholar who is interested participating in Antarctica fieldwork/exploration as a volunteer. My background is in biology, but I am happy to participate in any fieldwork ...
user3603093's user avatar
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