Solution for 75-200s period band: | Event: Nisqually WA, 010228_1854, Mw=6.81 | | Date/Time: 1/ 2/28 18:54:33 | Lat./Lon.: 47.153 -122.720 | Location provided by Pacific Northwest Seismic Network | | | OSU MOMENT TENSOR SOLUTION | | Stations Used: LLLB, PNT(T,R), WALA, NEW, HAWA(Z), HLID(Z), | WVOR, PIN, WDC, YBH, DBO(Z), COR(R,Z), ARC(Z), OCWA(Z), | PHC, BBB, CBB(Z) | | Depth (km): 54.0 | Moment Tensor: Scale = 10**26 dyn cm | Component Value Component Value | Mxx 0.009 Myy 1.223 | Mxy 0.022 Myz 1.374 | Mxz 0.026 Mzz -1.232 | Source Composition: | (Type/%) DC/ 99 CLVD/ 1 Iso/ 0 | Principal Axes: | Axis Value Plunge Azimuth | T 1.839 24 89 | N 0.008 0 359 | P -1.847 66 269 | Best Fitting Double-Couple: | Mo = 1.84E+26 dyn cm Mw = 6.81 | Plane Strike Rake Dip | NP1 359 -90 69 | NP2 179 -90 21 | | ##-#### | ####------######### | ####----------########### | ####-------------############ | #####--------------############## | #####----------------############## | #####-----------------############### | #####-------------------############### | ####--------------------############### | #####--------------------################ | #####-------- ---------######### #### | #####-------- P ---------######### T #### | #####-------- ---------######### #### | #####--------------------################ | ####--------------------############### | #####-------------------############### | #####------------------############## | #####----------------############## | #####---------------############# | #####------------############ | #####----------########## | ####-------######## | ###-### | | Lower Hemisphere Equal Area Projection | | | Note: Depth was determined in 30-200 s period band | Mw estimate in 30-200 s band is Mw=6.73 | | John Nabelek | COAS, Oregon State University, Corvallis, OR | nabelek@oce.orst.edu, (541) 737-2757