SHORT EXPLANATION: These seismograms were produced by a broadband seismometer in the Leonard walk-in vault. They show only vertical (ie, not East-West or North-South) ground motion. The seismograms show 24 horizontal lines, one for each hour of ground motion. The data is filtered so that it shows mainly surface waves from distant earthquakes. Some earthquakes are labeled (usually two to four each day) to show the earthquake region, the distance from Leonard in great circle degrees (eg. D=120), and magnitude (eg 5.1mb). Definite earthquake surface waves of earthquakes not located at the time the figure was posted may be marked with a ?. Some of the seismograms with large surface waves which may obscure other smaller earthquakes are SIGNED ROOT COMPRESSED or SIGNED POWER EXPANDED This consists of taking the root (from the 1.1 root to the 3.0 root) of each number while keeping the original sign (plus or minus) of the number.LONG EXPLANATION: hardware and software details. The epicenters used in annotation are from these three sources: 1.Swiss Seismological Service (Red Puma) seismo.ethz.ch/redpuma/redpuma_ami_list.html 2.U.S. Geological Survey, National Earthquake Information Center. neic.usgs.gov/neis/bulletin/ 3.KNET; Kyrgyzstan Real-time Broadband Array epicenter.ucsd.edu/~quake_KN/bulletin.txt These web pages are processed by a NAWK program which calculates the distance to Leonard, Oklahoma U.S., and the expected arrival times of P/Pdif/PKP and LR. Dates below are in the form of yyyymmdd. For example, 2000 DEC26 is 20001226. 20001231 20001230 20001229 20001228 20001227 20001226 20001225 20001224 20001223 20001222 20001221 20001220 20001219 20001218 20001217 20001216 20001215 20001214 20001213 20001212 20001211 20001210 20001209 20001208 20001207 20001206 20001205 20001204 20001203 20001202 20001201 20001130 20001129 20001128 20001126 20001125 20001124 20001123 20001122 20001120 20001119 20001118 20001116 20001115 20001114 20001113 20001112 20001111 20001110 20001109 20001108 20001107 20001106 NOTE: No earthquake annotations 2000 NOV06-NOV15 20001105 20001104 20001103 20001102 20001030 20001029 20001028 20001027 20001025 20001024 20001023 20001022 20001021 20001020 20001019 20001018 20001017 20001016 20001015 20001014 20001013 20001012 20001011 20001010 20001009 20001008 20001007 20001006 20001005 20001004 20001003 20001002 20001001 20000930 20000928 20000927 20000926 20000925 20000923 20000921 20000920 20000919 20000918 20000917 20000916 20000915 20000914 20000913 20000912 20000911 20000910 20000909 20000908 20000902 20000901 20000831 20000830 20000829 20000828 20000827 20000826 20000822 20000821 20000820 20000819 20000818 20000817 20000816 20000815 20000814 20000813 20000812 20000811 20000810 20000809 20000808 20000807 20000806 20000805 20000804 20000803 20000802 20000801 20000731 20000730 20000729 20000728
Seismogram Index For Year 2001
