@leopardi628.bsky.social
150 km radius of two sites. Both Pre-Qt and Qt faults in California. I thickened the border of the axis. This took a total of 21 minutes to fully form the contoured map. It really takes a while, but I am quite happy with the results. I will see if I can contain the data even further
#seismic
#matlab
#seismic
#matlab
October 11, 2025 at 12:55 AM
So I got to playing with setting up different color maps depending on the elevations. I was able to set it up for anything below 0m would be blue and anything above would be land color. So far, it's been looking nice and fun. These currently only have Qt and Pre-Qt faults from CGS.
#seismic
#matlab
#seismic
#matlab
September 29, 2025 at 4:08 AM
So I believe that I I was able to modify the colours to be something along my taste. Not only that, but I've not been able to apply the rivers and lakes as well. But setting up new functions that plot with M_Map was an extra task I didn't think of. This is become more interesting.
#seismic #matlab
#seismic #matlab
June 28, 2025 at 5:04 AM
As I continue to play around with the topography, I got around to adding in the NSHM2023 (in red) and the 50km radius CGS (in green) faults. These are capctured around the capital. Along with that, 3D plot was made for my own reference to understand the proportions of CA.
#seismic #matlab
#seismic #matlab
June 25, 2025 at 4:59 AM
Using data from the NCAR and M_Map's toolbox, I was able to plot against the National Weather Service's data of CA's borders, creating a topographic map. Understanding how this data works, I will add the fault data from before as well. (You can see the Sutter Buttes!)
#seismic #matlab
#seismic #matlab
June 23, 2025 at 9:40 PM
I wanted to add a legend that specifies the sources of the faults and added a fun little neat item that allows me to add a logo on the bottom right. This is becoming lots of fun as I progress with this project. This is just a preview, but a work in progress 😅 #seismic #matlab
June 18, 2025 at 5:05 AM
The other interesting item of the unfiltered magnitude PSHA was that a majority of the values were below a PGA of 0.2g, with these values being rounded to 2 decimal places. I will develop more PSHA and GMPE's before comparing with the British Geological Society's hazard map.
#seismic#matlab
#seismic#matlab
May 24, 2025 at 5:44 AM
The other interesting item of the unfiltered magnitude PSHA was that a majority of the values were below a PGA of 0.2g, with these values being rounded to 2 decimal places. I will develop more PSHA and GMPE's before comparing with the British Geological Society's hazard map.
#seismic#matlab
#seismic#matlab
Using the lesson I learned before, I reran my program to obtain much more reasonable results that portrayed lower PGA's. The interesting item is that the values without the rate of occurrence produces more AFoE of 1 at PGA of 0.01g.
#seismic#matlab
#seismic#matlab
May 24, 2025 at 5:39 AM
Using the lesson I learned before, I reran my program to obtain much more reasonable results that portrayed lower PGA's. The interesting item is that the values without the rate of occurrence produces more AFoE of 1 at PGA of 0.01g.
#seismic#matlab
#seismic#matlab
So I had made a mistake when calculating the Rate of Occurrence. I did it originally as an average of magnitudes/difference of years (latest - earliest year). I removed the average of magnitudes and now have reasonable PGA's! I'm going to try it out with all magnitudes again for fun.
#seismic#matlab
#seismic#matlab
May 24, 2025 at 5:08 AM
So I had made a mistake when calculating the Rate of Occurrence. I did it originally as an average of magnitudes/difference of years (latest - earliest year). I removed the average of magnitudes and now have reasonable PGA's! I'm going to try it out with all magnitudes again for fun.
#seismic#matlab
#seismic#matlab
So I went and did it using only the magnitudes and the distances from the original site of West Bay. It was interesting to see that a majority of the response spectra's PGA were 0.25g or below. This was a total of 173 points from a 100 km radius.
#seismic#earthquakes#matlab
#seismic#earthquakes#matlab
May 18, 2025 at 6:21 AM
So I went and did it using only the magnitudes and the distances from the original site of West Bay. It was interesting to see that a majority of the response spectra's PGA were 0.25g or below. This was a total of 173 points from a 100 km radius.
#seismic#earthquakes#matlab
#seismic#earthquakes#matlab
Reuploaded to print out 1200x1200 pixel png's. Also utilised an MCE from the nearest source and most reasonable magnitude to best compare with the 150 year design response spectrum. I also added the Dover Strait M5.8 event as well to compare withe the chosen MCE.
#seismic#earthquake#matlab
#seismic#earthquake#matlab
May 18, 2025 at 5:43 AM
Reuploaded to print out 1200x1200 pixel png's. Also utilised an MCE from the nearest source and most reasonable magnitude to best compare with the 150 year design response spectrum. I also added the Dover Strait M5.8 event as well to compare withe the chosen MCE.
#seismic#earthquake#matlab
#seismic#earthquake#matlab
Using Rietbrock et al. 2013 for the GMPE, I sourced the 5 seismic zones and created a hazard curve for PGA. Because the project asked about using the Dover Strait M5.8, I made a small comparison and it was insanely high! I'm going ot try the PSHA but with magnitudes only?
#seismic#matlab#earthquake
#seismic#matlab#earthquake
May 17, 2025 at 5:29 PM
Using Rietbrock et al. 2013 for the GMPE, I sourced the 5 seismic zones and created a hazard curve for PGA. Because the project asked about using the Dover Strait M5.8, I made a small comparison and it was insanely high! I'm going ot try the PSHA but with magnitudes only?
#seismic#matlab#earthquake
#seismic#matlab#earthquake
After some thoughts about how I would categorise the seismicity of the regions of southern England, I chose to group them together as seismic zones and used an average of magnitudes per source. A rate of occurrence was done for each source, so we'll see how the PSHA goes!
#seismic#matlab#earthquake
#seismic#matlab#earthquake
May 17, 2025 at 5:26 PM
After some thoughts about how I would categorise the seismicity of the regions of southern England, I chose to group them together as seismic zones and used an average of magnitudes per source. A rate of occurrence was done for each source, so we'll see how the PSHA goes!
#seismic#matlab#earthquake
#seismic#matlab#earthquake
Thanks to mangomap for providing the fault lines, but as I progress with my program, I have set up my code to implement a radius from the site, and plot only the faults whose coord are within the radius. Next step is to then select the mags!
#matlab
#seismic
#earthquakes
#matlab
#seismic
#earthquakes
May 10, 2025 at 3:49 AM
Thanks to mangomap for providing the fault lines, but as I progress with my program, I have set up my code to implement a radius from the site, and plot only the faults whose coord are within the radius. Next step is to then select the mags!
#matlab
#seismic
#earthquakes
#matlab
#seismic
#earthquakes
Currently playing around with MATLAB while helping out with my partner's homework. I've created an earthquake map color-coded by their magnitudes using the BGS earthquake database. I will be making a series of my progress on MATLAB and Seismic Hazard.
#matlab
#earthquake
#seismic
#matlab
#earthquake
#seismic
May 8, 2025 at 8:20 PM
Currently playing around with MATLAB while helping out with my partner's homework. I've created an earthquake map color-coded by their magnitudes using the BGS earthquake database. I will be making a series of my progress on MATLAB and Seismic Hazard.
#matlab
#earthquake
#seismic
#matlab
#earthquake
#seismic