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Questions related from Raed Ahmad
It is very important to study the time-acceleration history for all seismotectonic units in all overall the world to establish new type of ground motion attenuation and for data truth. regards
22 November 2017 6,460 2 View
In statistical and probabilty anslyses we are asked to compute error and uncertainty curves and values. Do you think there are absolute fixed error or uncertainty? Do we reach the time to say...
29 September 2017 9,933 3 View
It is well known that SAR (Synthetic Aperture Radar) interferometry is based on the SAR technology. How SAR can detect the deformation in three dimensions after earthquake happen? is it possible...
13 August 2017 5,051 5 View
As you know that Mw is related to released energy for specific earthquake, so why their recorded accelerations vary for the same distance and Mw for different seismotectonic regions?
11 August 2017 8,431 7 View
It is clear that both systems keep the general shape of signal similar. But do they have differences in saving same signal in both systems?digital save it in binary mood so what is the effect of...
04 August 2017 8,359 2 View
Is there any relation between the shape of the elliptical earth and the prediction of the epicenter of earthquakes? There are many causes of earthquakes. Tectonics plates and geodynamic conditions...
30 July 2017 6,341 8 View
For the Poisson model the addition of fault sources to the smoothed seismicity raises the hazard by 50% at locations where the smoothed seismicity contributes the highest hazard and up to 100% at...
18 June 2017 2,379 1 View
The design response spectrum provides a general procedure to estimate the expected dynamic load on a structure which is expressed as a function of natural period. Thus knowing the period of the...
18 June 2017 6,040 5 View
In Time Dependent Model, the definition of foreshock, mainshock and aftershock is not necessary. In this model, every event is potentially triggered by all the previous events and every event can...
16 June 2017 6,466 1 View
When we study the seismicity of any region we need to build a trustable caatalog. Could you please explain these optimal parameters of earthquake clustering? how to build on these seismic...
15 June 2017 9,115 3 View
I guess it is necessary that our earth enter in glacial age to avoid global disaster. The earth freezing will cool down seismic and volcanic activities to be minimum.What is your opinion?
11 June 2017 5,060 6 View
In one day here in Syria, i was watching automatic analysis of seismic records M>2, directly i warn the seismologists that higher earthquake magnitude might occur at any time. In the same day...
09 June 2017 1,584 21 View
How to download a recent and complete version of FLAC 2D geotechnical software?
05 June 2017 4,131 11 View
when Loose sand and silt is saturated with water so that can behave like a liquid under the earthquakes forces. Earthquake waves cause water pressures to increase in the sediment and the sand...
05 June 2017 772 5 View
In a simple word, amplification is the increase of amplitude due to surface soft soil.Is it true that our assumption that the amplification happen only when we have contrast in geologic or...
03 June 2017 7,251 8 View
As we all know that the field data is our most trustful data and scientists use it for comparision with other methods. Shear wave velocity VS30 is the main parameter for estimation of seismic...
30 May 2017 4,385 5 View
Suppose, we build our buildings few meters down inside the earth surface; do these building affected by any strong earthquakes?How much should be the thickness of soil above our buildings to keep...
27 May 2017 8,804 5 View
The earthquake occurrence is more complicated than the models on which hazard maps are based. Hazard maps often depend on poorly constrained parameters, whose values are chosen based on the...
25 May 2017 2,778 17 View
Seismic noise levels analysis is useful to characterize network performance; to detect problems with seismic stations and to characterize the frequency dependent noise levels due to background...
24 May 2017 3,967 3 View
