Search found 59 matches

by Resource
Sun Jun 07, 2020 9:25 am
Forum: General Geophysics and Geoscience
Topic: Guess geophysics terms (2)
Replies: 7
Views: 693

Re: Guess geophysics terms (2)

It's dip moveout since the move out is happening on a "dip" (stairs). :beer:
by Resource
Fri Jun 05, 2020 7:25 am
Forum: General Geophysics and Geoscience
Topic: Guess geophysics terms (2)
Replies: 7
Views: 693

Re: Guess geophysics terms (2)

GuyM wrote:
Thu Jun 04, 2020 10:56 pm
1) Travel time
2) bulk shift
3) Plane wave
??
Two of them are correct ;)
by Resource
Thu Jun 04, 2020 7:49 pm
Forum: General Geophysics and Geoscience
Topic: Guess geophysics terms (2)
Replies: 7
Views: 693

Guess geophysics terms (2)

1)
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2)
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3.jpg (13.52 KiB) Viewed 693 times

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2.jpg (54.26 KiB) Viewed 693 times
by Resource
Wed Jun 03, 2020 6:18 am
Forum: General Geophysics and Geoscience
Topic: Guess geophysics terms
Replies: 9
Views: 490

Re: Guess geophysics terms

1) Free Air Correction (Gravity) 2) Secondary Wave (Vs) 3) Love Wave :!: Finally, all answers are out! :lol: For the second one, combined with GuyM's answer, you got it right! Vs is the conventional notation for shear wave (secondary wave) velocity. With modeling going on in the fashion show, the a...
by Resource
Tue Jun 02, 2020 4:16 pm
Forum: General Geophysics and Geoscience
Topic: Guess geophysics terms
Replies: 9
Views: 490

Re: Guess geophysics terms

chrisvecan wrote:
Tue Jun 02, 2020 3:15 pm
3rd picture: Love Wave?
:!:
The picture shows a wave with the shape of hearts, so the answer is "Love Wave". In geophysics, Love wave is a surface wave polarized horizontally with its particle movements perpendicular to the direction of wave propagation.
by Resource
Sun May 31, 2020 8:14 pm
Forum: General Geophysics and Geoscience
Topic: Guess geophysics terms
Replies: 9
Views: 490

Re: Guess geophysics terms

Free air correction (gravity) is correct! Since you have to pay to use the air pump, the "free air" sign apparently should be "corrected". So the answer is "Free-air Correction". It's a term used in gravity data reduction for the compensation of altitude.
by Resource
Sun May 31, 2020 9:30 am
Forum: General Geophysics and Geoscience
Topic: Guess geophysics terms
Replies: 9
Views: 490

Guess geophysics terms

Can you guess a geophysics term for each image below?

r3.jpg
r3.jpg (5.33 KiB) Viewed 490 times
r2.jpg
r2.jpg (13.09 KiB) Viewed 490 times
r1.jpg
r1.jpg (27.57 KiB) Viewed 490 times
by Resource
Sat Mar 30, 2013 2:34 pm
Forum: General Geophysics and Geoscience
Topic: List of Universities/Colleges/Institutes with Geophysics Programs/Degrees in USA
Replies: 9
Views: 56646

Re: List of Universities/Colleges/Institutes with Geophysics Programs/Degrees in USA

For those who are interested in Geological/Geophysical Engineering only: --South Dakota School of Mines and Technology --University of North Dakota --University of Mississippi --University of Alaska Fairbanks --Montana Tech of the University of Montana --University of Minnesota Twin Cities --Univers...
by Resource
Fri Mar 15, 2013 2:22 pm
Forum: Near Surface Geophysics
Topic: List of seismograph manufacturers (Seismic refraction and reflection equipment)
Replies: 14
Views: 29578

Re: List of seismograph manufacturers (Seismic refraction and reflection equipment)

Updated. Thanks for the input! BTW, JEA248W, you are killing me here, do you have anything in English?
by Resource
Tue Aug 21, 2012 2:41 pm
Forum: Near Surface Geophysics
Topic: List of Frequency Domain Ground Conductivity Meters
Replies: 11
Views: 11673

Re: List of Frequency Domain Ground Conductivity Meters

New:
Geophex GEM-5. Multifrequency gradiometer, 90Hz – 96kHz.
by Resource
Wed Jul 25, 2012 3:10 pm
Forum: General Geophysics and Geoscience
Topic: Applications of Geophysics
Replies: 2
Views: 10742

Applications of Geophysics

This is an initiation for a list of applications of geophysics. More will be added. Comments, especially with applications not on the list are welcome. Thanks! Natural hazard studies Earthquake Vocalno Landslide Resource explorations Oil and gas exploration Mineral prospecting Geothermal exploration...
by Resource
Thu Jul 19, 2012 7:02 pm
Forum: Near Surface Geophysics
Topic: Typical Geophysical Equipments
Replies: 4
Views: 9720

Typical Geophysical Equipments

The list is not meant to be complete, but rather to show some examples of typical geophysical equipments we may indicate while we talk about certain geophysical methods/surveys in near surface geophysics. Gravity meter Scintrex CG-5 L&R G Meter Magnetometer Geometrics G856 proton precession total-fi...
by Resource
Wed Jul 18, 2012 10:18 pm
Forum: Near Surface Geophysics
Topic: What is ground penetrating radar
Replies: 0
Views: 9444

What is ground penetrating radar

A ground penetrating radar (GPR) is a radar. Unlike regular radars which transmit electromagnetic waves through air or free space to detect airplanes, ships or missiles, GPR is designed and used for transmitting electromagnetic waves into the ground for subsurface geological mapping or underground o...
by Resource
Wed Jul 18, 2012 4:32 pm
Forum: Near Surface Geophysics
Topic: Geophysical surveys in archaeology
Replies: 2
Views: 9476

Geophysical surveys in archaeology

Traditionally the magnetic method has been the most common geophysical method for archaeological surveys. Over the years, many other methods have gained much more popularity including electromagnetic induction and ground penetrating radar, etc. For modern geophysical surveys in archaeology, there ar...
by Resource
Sat Jul 14, 2012 2:09 pm
Forum: General Geophysics and Geoscience
Topic: Geophysical methods of exploration
Replies: 4
Views: 25582

Geophysical methods of exploration

Although geophysical methods for oil and gas exploration and mineral prospecting include almost all the major geophysical methods ever invented, oil and gas exploration is dominated by seismic reflection method, in both land and marine settings. It’s hard to say which methods dominate mineral prospe...
by Resource
Wed Mar 28, 2012 1:48 pm
Forum: General Geophysics and Geoscience
Topic: List of Universities/Colleges/Institutes with Geophysics Programs/Degrees in USA
Replies: 9
Views: 56646

Re: List of Universities/Colleges/Institutes with Geophysics Programs/Degrees in USA

There should be a few more I missed. I am going to update the list soon. Thanks for the input.
by Resource
Wed Jan 25, 2012 2:33 pm
Forum: General Geophysics and Geoscience
Topic: Geological survey and geophysical survey
Replies: 0
Views: 14443

Geological survey and geophysical survey

A geological survey is to investigate the interested land and its subsurface soils and rocks for environmental concerns, hazard reductions and mining prospecting, etc. The goal of geological surveys usually is to build some base maps or models, including topography, stratigraphy, rock distribution a...
by Resource
Tue Jan 24, 2012 7:49 pm
Forum: General Geophysics and Geoscience
Topic: Earthquake and seismic waves
Replies: 2
Views: 11817

Earthquake and seismic waves

As the Earth is a dynamic system, tensions build up inside the crust over time. Earthquakes happen when such tensions are suddenly released and seismic waves are generated which will reach the ground surface where we feel the ground shakes. The source location of the earthquake is called hypocenter;...
by Resource
Wed Jan 11, 2012 8:45 pm
Forum: Near Surface Geophysics
Topic: List of underground cable and pipe locator (utility locating) equipments
Replies: 1
Views: 12665

Re: List of underground cable and pipe locator equipments

The majority of the transmitters mentioned above can be used in three modes for locating underground/buried utility cables, conduits, pipes: direction connection (usually with cables with alligator-clip ends), clamp induction and drop-box induction. Steel fish tapes can also be used with the transmi...
by Resource
Sun Jan 08, 2012 6:22 pm
Forum: Near Surface Geophysics
Topic: List of underground cable and pipe locator (utility locating) equipments
Replies: 1
Views: 12665

List of underground cable and pipe locator (utility locating) equipments

3M Company Dynatel™ 2200, 2200M, 2250M and 2273M Series: options of transmitting signals with 4 frequencies simultaneously: 577 Hz, 8 kHz, 33 kHz and 200 kHz. Utility depth estimation. http://www.3m.com/ Amprobe, Inc. AT-3500: 33KHz, passive power mode and radio frequencies. AT-5000 and AT-5005: 49...
by Resource
Sat Jan 07, 2012 3:33 pm
Forum: General Geophysics and Geoscience
Topic: Geophysicist
Replies: 0
Views: 10239

Geophysicist

What do geophysicists do? A geophysicist is someone who does research on geophysical sciences or use geophysics for practical applications. Just as there are different kinds of doctors, there are also different kinds of geophysicists. There are varieties of topics and applications geophysicists are...
by Resource
Sat Jan 07, 2012 11:47 am
Forum: General Geophysics and Geoscience
Topic: What is geophysics
Replies: 3
Views: 20142

What is geophysics

When we talk about geophysics, we may refer to geophysical sciences or applied geophysics. Geophysical Sciences In geophysical sciences, physical principles are used to study the Earth (lands, oceans and the atmosphere) and other celestial bodies. The physics principles involved include but not limi...
by Resource
Sat Dec 31, 2011 2:27 pm
Forum: General Geophysics and Geoscience
Topic: Geophysics job prospects
Replies: 17
Views: 58288

Geophysics job prospects

A lot of students ask whether they should pursue geophysics degrees or something else close related. Many of them are studying geology or physics. The main concern is of course the future career perspective. So are you going to have a good career in geophysics? This is a big question and there is no...
by Resource
Fri Dec 30, 2011 2:30 pm
Forum: Oil and Gas Exploration
Topic: Conventional Seismic Data Processing Sequence
Replies: 25
Views: 55927

Re: Conventional Seismic Data Processing Sequence

Great discussion, guys! This topic has been collected in the subforum "Resource and Concept".
by Resource
Wed Dec 28, 2011 8:23 pm
Forum: General Geophysics and Geoscience
Topic: What is applied geophysics
Replies: 0
Views: 20033

What is applied geophysics

Applied geophysics is based on physics principles (e.g., gravity, magnetics, mechanics and electromagnetic, etc), collect and interpret data to extract info about the subsurface conditions for practical purposes, including oil and gas exploration, mineral prospecting, geothermal exploration, groundw...