Questions tagged [geophysics]
Geophysics is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment.
535
questions
2
votes
0
answers
84
views
Could the electrical potential difference between the Windward and Leeward sides of a mountain range generate electrical current?
I would like to know if it is possible that the electrical potential difference between the Windward side and the Leeward side of a mountain range, due to a thunderstorm occurring on the Windward side,...
- 421
4
votes
1
answer
68
views
Simple explanation of what "preferential lattice expansion due to excessive magnesium adsorption", means
In the context of crystal growth, particularly saddle or baroque dolomite development, what does "preferential lattice expansion due to excessive magnesium adsorption" mean in practical ...
- 193
1
vote
1
answer
49
views
How to compute spherical harmonics coefficients using orthogonality?
I use the lunar gravity model GRGM900C to calculate the gravitational potential across a $360{^\circ}*360{^\circ}$ grid. This calculation follows the equation:
$$V(\varphi,\lambda)=\sum_{\mathrm{n=0}}^...
- 21
1
vote
0
answers
13
views
hi, any ideas how to convert Rcd and Dst seismic data into SEGY?
any ideas how to convert Rcd and Dst seismic data into SEGY?
- 11
1
vote
0
answers
65
views
Why does weaker local gravity cause lower sea level?
The weaker local gravity in the Indian Ocean geoid low (IOGL) causes the sea level to be 106 m below the global mean sea level. Why is that ?
"Because of this lower density, the gravitational ...
- 223
1
vote
0
answers
24
views
Question regarding the breakup of India from Eastern Gondwana [closed]
I wanted to ask this question as it relates to a project I am working on. In this "timeline" when India broke away from Gondwana the Indian Plate took a small piece of land from Eastern ...
1
vote
0
answers
43
views
What happens to seismic waves reflected back to the surface?
What would be the behavior of seismic waves when it hit the geological media?
The waves coming from a source hits different boundaries with different energies, the wave will be reduced in energy by ...
- 11
1
vote
0
answers
192
views
SEG-2 vs SEG-Y file formats
I have limited experience with the different SEG file formats and I was hoping if someone could shed some light on the current preffered file formats used in software applications and for sharing ...
- 91
0
votes
0
answers
39
views
Inversion of magnetic data
I am working with inversion of magnetic data and one colleague of my supervisor has said this about subtracting the IGRF for inversions:
"””
He needs to subtract a value from them to make the ...
- 1
3
votes
2
answers
103
views
With the Earth revolving around the Sun , is there some [invisible] "tail" like Shooting Stars & Comets have?
Shooting Stars & Comets have tails.
Here is Example Wiki Image showing Comet with 2 tails :
With the Earth revolving around the Sun , is there some [invisible] "tail" like Comets have ?
...
- 211
0
votes
0
answers
7
views
Input of the relation, source and receptor files into SLB Omega
Is anyone using SLB Omega that knows how to input the source, relation and receptor files that are not using SPS format?
5
votes
3
answers
258
views
What criteria determines whether earthquakes are classified as new or aftershocks?
I saw a recent paper where it is claimed that aftershocks can occur years, decades or centuries after the main earthquake.
When seismic activity is observed, what criteria determines the ...
- 211
2
votes
1
answer
78
views
Composition of Earth's Core
Is there a list giving an estimate of the abundance of every element of the periodic table in the Earth's Core - possibly differentiating by inner core and outer core?
I am specifically interested in ...
- 29
0
votes
0
answers
31
views
How to extend the Wyllie time average equation to multiple constituents
I understand the Wyllie time average equation
How to extend it to multiple constituents ?
- 39
1
vote
1
answer
79
views
What is the reason behind the density being negative value
This is the example density depth functions for various sedimentary sections world wide. But someof the sections marked with red, due to their last term, as i increase the value of z(depth) they ...
- 111