Geology Reference
In-Depth Information
Exercise 6 • Earthquake Epicenters, Intensities, Risks, Faults, Nonstructural Hazards and Preparation
89
TABLE
6.3
Intensities from the April 13,1949, Earthquake
Location (symbol)
Intensity
Primary Evidence for 1949 Earthquake
Aberdeen (Ab)
Bellingham (Be)
Bremerton (Br)
Buckley (Bu)
VIII
Walls and chimneys fall; cracked ground
Centralia (Ce)
VIII—IX
Sand and mud eruption: pipes break; damage considerable
Cle Elum (Cl)
Eatonville (Ea)
VII
Plaster falls in large pieces; difficulty maintaining balance
Hyak (Hy)
VI
Trees/bushes shake moderately; few windows break
Longview (Lo)
IX
Olympia (Ol)
Port Townsend (Po)
Puyallup (Pu)
Randle (Ra)
VIII
Twisted and fallen chimneys; walls fall
Satsop (Sa)
Seattle (Se)
Snoqualmie (Sn)
VII
Damaged chimneys/windows; trees/bushes shaken strongly
Tacoma (Ta)
FIGURE 6.4
Index map of Washington showing locations of the sites listed in Table 6.3. Modified Mercalli Intensities for April 13,
1949, earthquake are given for eastern Washington. Some boundaries of intensity zones shown. Completed map is an isoseismal map.
