Unclassified 



SECURITY CLASSIFICATION OP THIS PAGE 



REPORT DOCUMENTATION PAGE 



la REPORT SECURITY CLASSIFICATION 



Unclassified 



lb RESTRICTIVE MARKINGS 



2a. SECURITY CLASSIFICATION AUTHORITY 



2b. DECLASSIFICATION / DOWNGRADING SCHEDULE 



3 DISTRIBUTION /AVAILABILITY OF REPORT 



Approved for public release; distribution 

 unlimited. 



4 PERFORMING ORGANIZATION REPORT NUMBER(S) 



Technical Report CERC-87-7 



5. MONITORING ORGANIZATION REPORT NUMBER(S) 



6a. NAME OF PERFORMING ORGANIZATION 



USAEWES, Coastal 



FncrinPpHncr Rpgpar^h f.pnhpr 



6b OFFICE SYMBOL 

 (If applicable) 



HESSE 



7a. NAME OF MONITORING ORGANIZATION 



6c. ADDRESS (Oly, SUM, and ZIP Code) 



PO Box 631 



Vicksburg, MS 39180-0631 



7b. ADDRESS (City, State, and ZIP Code) 



8a. NAME OF FUNDING /SPONSORING 



organization Federal 

 Emergency Management Agency 



So. OFFICE SYMBOL 

 (If applicable) 



9 procurement instrument identification NUMBER 

 See reverse 



8c ADDRESS (City, State, and ZIP Code) 



500 "C" Street, SW 

 Washington. DC 20472 



10. SOURCE OF FUNDING NUMBERS 



1 1 TITLE (Include Security Classification) 



Tsunami Predictions for the Coast of Alaska: Kodiak Island to Ketchikan 



12 PERSONAL AUTHOR(S) 



Crawford. Peter L. 



1 3a. TYPE OF REPORT 1 3b TIME COVERED 14. DATE OF REPORT (Year, Month, Day) 15 PAGE COUNT 



Final report \ from May 85 TpJuly 86 | flpri1 1Q p, 7 I 1 T7 



16 SUPPLEMENTARY NOTATION 



Available from National Technical Information Service, 5285 Port Royal Road, Springfield, 

 VA 22161. 



COSATI CODES 



18 SUBJECT TERMS (Continue on reverse if necessary and identify by block number) 



Alaska (LC) Tsunamis (LC) 



Numerical analysis (LC) 



Tides (LC) 



'9 ABSTRACT (Continue on reverse if necessary and identify by block number) 



The 100- and 500-year combined tsunami and tide elevations were predicted at sites 

 along the coast of Alaska between Kodiak Island and Ketchikan. Lack of historical data at 

 most sites necessitated the generation of a synthetic record of tsunami activity in the 

 Gulf of Alaska. The geophysical and tectonic setting of the Gulf were used to synthesize a 

 record of tsunamigenic, tectonic deformations of the seafloor. A numerical model was used 

 to simulate the tsunamis resulting from each deformation. Numerical simulations of the 1964 

 Alaskan tsunami were made and compared with historical tide gage recordings. 



Historical data of tsunami activity along the entire Aleutian trench were used to as- 

 sign probability of occurrence to each tsunami in the synthetic record. A numerical proce- 

 dure was used to combine the effects of astronomical tides and tsunamis and to produce the 

 100- and 500-year combined tsunami and tide elevations. 



20 DISTRIBUTION /AVAILABILITY OF ABSTRACT 



□ unclassified/unlimited D same as rpt 



Ddtic users 



22a. NAME OF RESPONSIBLE INDIVIDUAL 



21. ABSTRACT SECURITY CLASSIFICATION 



Unclassified 



22b. TELEPHONE (Include Area Code) 22c. OFFICE SYMBOL 



DO FORM 1473, 84 MAR 



83 APR edition may be used until exhausted. 

 All other editions are obsolete. 



SECURITY CLASSIFICATION OF THIS PAGE 



Unclassified 



MBL/WHOI 



0301 00^125^ A 



