ILLUSTRATIONS 

 Figure Page 



1 General map of south-central Alaska covering the area 



most affected by the Earthquake 2 



2 (a) Major physiographic Divisions of Alaska k 



(h) Areal extent of the effects of the Earthquake h 



3 Epicenters of Major Alaskan Earthquakes 6 



h Alaskan Earthquake energy release (ergs per unit area, 



2°EW - i|°NS) 190I+-I96U 7 



5 Mean annual occurrence of shallow focus earthquake shocks . 8 



6 Map ajid sections of the K\irile-Kamchatka segment of the 

 circum-Pacific arc 10 



7 Zones of distiirbance in the Alaskan Earthquake 11 



8 Tectonic uplift and subsidence in south-central Alaska . . 12 



9 Contours of tectonic land-level change in Prince William 



Sound (levels in feet) ik 



10 Contours of tectonic land-level change in Prince William 



Sound 15 



11 Tectonic land-level change (in meters) and faulting in 



the Montague Island Region ... I6 



12 Tectonic sea-bottom change (in feet) southwest of 



Montague Island 17 



13 Bathymetric cross sections southwest of Montague Island . . I8 



lU Schematic cross sections across the Aleutian Arc showing 



land-level changes 19 



15 Apparent horizontal displacement of south-central Alaska . 21 



16 Magnitude and direction of apparent horizontal land 

 displacement 22 



17 Trend of dependence of maxim\m resxiltant ground displacement 



on earthquake magnitude 23 



18 Epicenter locations of earthquake of March 27-28, I96U, 



and aftershocks through December 31, I965 25 



