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Questions tagged [wave-modeling]

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7
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1answer
182 views

What wind forecast datasets are available for forcing a wave forecast model?

I am trying to set up a spectral wave model for waves forecasting in the Mediterranean. I need the meteorological forecast for this region. I am aware of the ECMWF datasets. But unfortunately, only ...
5
votes
1answer
185 views

Why does wind blowing against a strong current create way bigger waves?

It's a well known fact that wind will cause very big waves if blowing against a strong current, for example in the gulf stream off the US coast, or in the bay of San Francisco with a very strong (5 ...
7
votes
1answer
657 views

Why would a Martian tsunami travel at only 200 km/hour, four times slower than on Earth?

The news article Impact crater linked to Martian tsunamis describes results of numerical calculations which address the possibility that a giant martian tsunami triggered by an impact has left ...
2
votes
1answer
102 views

Any site for monitoring equatorial oceanic waves?

I use Carl Schreck's site Equatorial Wave Zoo for monitoring atmospheric waves such as Kelvin wave, Equatorial Rossby wave, filtered MJO OLR, Mixed Rossby Wave(MRG),etc. Here is an example - Kelvin ...
3
votes
1answer
78 views

How would waves (in a fluid) behave without intermolecular attraction?

Water molecules, as many people know, are polarized, and so water molecules tend to have an attractive force between them. But how would the waves in water behave if this attraction no longer was ...
2
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0answers
102 views

Where can I find wave scatter tables (joint probability Hs vs T) for certain coastal regions?

I am struggling to find a database or free source of joint probability of significant wave height and period, i.e. wave scatter tables. Data for buoys are useful, however not available for regions ...
8
votes
2answers
666 views

The significance of peak period in surface wave models

The peak period or peak frequency is considered to be an important quantity in characterizing ocean surface waves, including wave models [e.g., 1]. But practically, why are we interested in modelling ...
9
votes
1answer
191 views

Why can't wave models model storm surge?

I found this nice module here on MetEd that gives an overview of the WAVEWATCH wave model. In it, in the Introduction section, it is mentioned that WAVEWATCH cannot model storm surge or tsunamis. Is ...
6
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0answers
95 views

What makes the SWAN wave model suitable for coastal regions?

It appears that the SWAN wave model is adept in shallow water and coastal regions. See for example here and here. What makes SWAN more suitable in these regions than other wave models like WAVEWATCH? ...
10
votes
1answer
1k views

What are the challenges in predicting lithology directly from acoustic impedance?

Seismic inversion methods help to visualize the subsurface layers of the earth in terms of petrophysical properties (e.g. impedance). Still some geophysicists use the final inverted impedance model in ...
7
votes
1answer
1k views

What is the meaning of seismic spectral blueing?

What is the meaning of seismic spectral blueing? Please cite any good introductory materials if possible.
15
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2answers
1k views

At the ocean surface, why do large amplitude waves travel faster than small amplitude waves?

I understand the mathematics behind it but I am looking for an intuitive description.
5
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1answer
2k views

Whitecapping in ocean surface waves

Even though the physics of wave breaking for ocean surface waves may not be well understood, what wave breaking is and what it looks like is no mystery to the average beach-goer. However, I am ...
8
votes
3answers
836 views

Why do deviated wells show poor correlation to seismic data?

Well correlation and calibration is an important step in any type of seismic inversion. In order to obtain a good broadband frequency model, the synthetics should be correlated with original seismic ...
9
votes
1answer
152 views

How should I choose the block size in constrained model-based inversion?

In constrained model based inversion, block size (in ms) is one of the inversion parameters. Specifying the block size value in the software divides the pseudo-velocity log into that number of layers ...
12
votes
1answer
2k views

Should one extract wavelet from seismic or well log for the generation of synthetic traces?

Synthetics are generated by convolving reflectivity series with the known wavelet. I have seen most of the wavelet are extracted from seismic data itself. Is there any hard and fast rule, or can one ...
14
votes
2answers
1k views

Software for sediment transport modeling

I am doing a paper about coastal processes and I was told that I should include a sediment transport modeling to further examine my geophysical findings. I was reading in the net and found that ...
8
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2answers
2k views

How do we convert the seismic trace wavelet to zero phase which is in mixed phase?

As we know the mixed phase data would not give the "real TWTT" through the medium. We need a zero-phase wavelet that can directly correspond to the time taken to travel in a given media. So my ...
7
votes
1answer
270 views

Is wave spectrum always positive and why?

Is the 2-D elevation wave spectrum (as a function of wavenumber and direction, with units of $m^4$) always positive? If so, why would that be the case?
10
votes
1answer
219 views

Stability correction factor in the Wavewatch III wave model

I'm studying the Wavewatch III wave model (http://polar.ncep.noaa.gov/waves/index2.shtml). I'm confused by the stability correction factor, named ASF in the code. What is its purpose? Is it related to ...