from the residuation analyses made by Wilson, et al (1965) for a part 

 of the Monterey tide gage marigram, scribed long after the arrival of 

 the first waves of the tsunami. These suggest that more of the lower 

 modes of oscillation were excited at that stage and that the systems 

 denoted by Figures 8^+ a and d, in particular, were probably operative. 

 It seems reasonable to conclude that the tsunami excited the circular- 

 node shelf-oscillation (Figure S^ta) immediately on its arrival, probably 

 through the stimulus of its third harmonic, as seemed to be the case at 

 Crescent City. 



Runup of the tsunami along the California coast south of Monterey 

 appears undocximented. Figure 85, from Spaeth and Berkman (1967), however, 

 shows that the tsunami, although drawing powerful response from such 

 places as Santa Monica, was now arriving on the low spring tide and 

 therefore failed to reach higher than the normal range of tide. 



10. Heights of Runup Along the Hawaiian Islands 



Information about the Hawaiian Islands has been furnished by 

 H. G. Loomis (1967 ) of the Environmental Science Services Administration, 

 Honolulu, Hawaii, and is incorporated with minor change in the following. 



The tsunami caused no loss of life and no serious structural damage 

 in the Hawaiian Islands. The highest water levels reported were generally 

 about 10 feet above MLLW on the northern shores of Maui and Oahu and in 

 Hilo Bay. High water marks of 15 feet and 16 feet were observed at 

 isolated places on the northern shore of Oahu. The highest water level 

 measured at Kahului , Maui , was 12 feet ; on Kauai , 6 feet . There was 

 little intrusion of water beyond the usual limits of high water and 

 occasional high seas at these places. In Hilo, the floors of several 

 restaurants and houses at the water's edge were flooded. The tsunamis 

 of 19^+6, 1952, 1957, and i960 had washed out vulnerable areas at Hilo 

 and those parts most severely damaged in 19^6 and I96O had been mostly 

 cleared of buildings by March 196U. The highest wave of I96U did not 

 even come over the road into that part of town. 



Teams from the University of Hawaii made runup measurements at most 

 places on the islands of Hawaii, Maui, Oahu, and Kauai where waves left 

 a measurable high water mark. As it happened, most of the staff of the 

 Tsunami Research Program at the University were out of the State at the 

 time of the tsunami and so the runup measurements were made two or three 

 days later. The heights of the water marks were measured by surveyor's 

 staff and hand level in some cases, and estimated in others. Some 

 information was obtained by questioning people about their observations 

 during and immediately after the tsunami. Runup heights are shown in 

 Figure 86. 



The highest water levels occurred, as expected, on the north sides 

 of the islands. The C&GS tide gage records of the tsunami (Spaeth and 

 Berkman, I965, I967) show the following features. The record from 

 Mokuoloe Island, Oahu (Figure 58a) appears to show a low-pass filter 



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