Testing UCVM Vs Values
From SCECpedia
Summary of testing low Vs values returned by UCVM for some velocity models when Ely GTL is applied
Contents
Low Vs Test Points
Low Vs values are found for the following points from CVM-S4.26 using elygtl.
lon, lat, Vs(m/s) A: -115.1 32.6 93.916 B: -115.6 32.8 114.1 C: -115.78 33.2 90.0 D: -118.1 33.8 114.1 E: -118.0 34.8 119.234 F: -116.52 36.5 106.563 G: -119.5 36.0 114.1
Test Impact of Z range of ElyGTL
Tests below show no impact on surface Vs by extending the Z range
-bash-4.2$ ./bin/ucvm_query -f ./conf/ucvm.conf -c gd -m cvms5,elygtl:ely -z 0,350 < file.in Using Geo Depth coordinates as z mode.
-115.1000 32.6000 0.000 20.000 187.832 cvms5 2250.415 1178.551 2172.060 elygtl 0.000 187.832 0.000 ely 653.574 93.916 1000.000 -115.6000 32.8000 0.000 -9.985 228.200 cvms5 2000.182 1059.580 2127.748 elygtl 0.000 228.200 0.000 ely 689.649 114.100 1000.000 -115.7800 33.2000 0.000 -70.960 180.000 cvms5 1955.449 1002.836 2103.969 elygtl 0.000 180.000 0.000 ely 646.448 90.000 1000.000 -118.1000 33.8000 0.000 5.077 228.200 cvms5 1769.035 910.839 2061.457 elygtl 0.000 228.200 0.000 ely 689.649 114.100 1000.000 -118.0000 34.8000 0.000 704.403 238.467 cvms5 3036.981 1859.951 2324.091 elygtl 0.000 238.467 0.000 ely 698.655 119.234 1000.000 -116.5200 36.5000 0.000 701.274 213.306 cvms5 5214.103 2999.543 2527.909 elygtl 0.000 213.306 0.000 ely 676.464 106.653 1000.000 -119.5000 36.0000 0.000 61.622 228.200 cvms5 3794.050 2052.842 2350.708 elygtl 0.000 228.200 0.000 ely 689.649 114.100 1000.000
-bash-4.2$ ./bin/ucvm_query -f ./conf/ucvm.conf -c gd -m cvms5,elygtl:ely -z 0,1000 < file.in
-115.1000 32.6000 0.000 20.000 187.832 cvms5 2590.639 1347.202 2223.546 elygtl 0.000 187.832 0.000 ely 653.574 93.916 1000.000 -115.6000 32.8000 0.000 -9.985 228.200 cvms5 2266.979 1222.258 2186.597 elygtl 0.000 228.200 0.000 ely 689.649 114.100 1000.000 -115.7800 33.2000 0.000 -70.960 180.000 cvms5 2221.783 1226.802 2188.058 elygtl 0.000 180.000 0.000 ely 646.448 90.000 1000.000 -118.1000 33.8000 0.000 5.077 228.200 cvms5 2195.387 1144.858 2160.235 elygtl 0.000 228.200 0.000 ely 689.649 114.100 1000.000 -118.0000 34.8000 0.000 704.403 238.467 cvms5 3313.720 2070.858 2353.114 elygtl 0.000 238.467 0.000 ely 698.655 119.234 1000.000 -116.5200 36.5000 0.000 701.274 213.306 cvms5 5239.446 3017.712 2533.212 elygtl 0.000 213.306 0.000 ely 676.464 106.653 1000.000 -119.5000 36.0000 0.000 61.622 228.200 cvms5 3913.290 2088.075 2355.411 elygtl 0.000 228.200 0.000 ely 689.649 114.100 1000.000
However, adding the elyGTL without specifying a z range has significant impact:
-bash-4.2$ ./bin/ucvm_query -f ./conf/ucvm.conf -c gd -m cvms5,elygtl:ely < file.in Using Geo Depth coordinates as z mode.
-115.1000 32.6000 0.000 20.000 187.832 cvms5 2117.109 1106.877 2146.231 none 0.000 0.000 0.000 crust 2117.109 1106.877 2146.231 -115.6000 32.8000 0.000 -9.985 228.200 cvms5 1894.677 1001.519 2103.395 none 0.000 0.000 0.000 crust 1894.677 1001.519 2103.395 -115.7800 33.2000 0.000 -70.960 180.000 cvms5 1831.621 938.975 2074.998 none 0.000 0.000 0.000 crust 1831.621 938.975 2074.998 -118.1000 33.8000 0.000 5.077 228.200 cvms5 1605.554 834.269 2022.078 none 0.000 0.000 0.000 crust 1605.554 834.269 2022.078 -118.0000 34.8000 0.000 704.403 238.467 cvms5 3034.279 1858.337 2323.856 none 0.000 0.000 0.000 crust 3034.279 1858.337 2323.856 -116.5200 36.5000 0.000 701.274 213.306 cvms5 5212.431 2999.594 2527.924 none 0.000 0.000 0.000 crust 5212.431 2999.594 2527.924 -119.5000 36.0000 0.000 61.622 228.200 cvms5 3763.020 2030.096 2347.663 none 0.000 0.000 0.000 crust 3763.020 2030.096 2347.663
Map of Low Vs Values from UCVM
This map shows Vs values for CVMS+elygtl (cvms5,elygtl:ely -z 0,1000).
