. Collected reprints, Essa Institute for Oceanography. Oceanography 30 WAVE REPORTING PROCEDURES. Figure 14.—Simulated example of seismic sea wave on remote recorder chart paper. Greenwich Mean Time is indicated to right of tide record—corrected for a time difference of ^10 hours. At about 0435Z, the tide observer might have received the following message from Honolulu Observatory: TSUNAMI. EARTHQUAKE OCCURRED 0302Z, LAT LONG EXAM- INE TIDE RECORD 0400Z to 0600Z. REPORT ANY UNUSUAL ACTIVITY IM- MEDIATELY. After acknowledging the message, the observer should have immediately check
. Collected reprints, Essa Institute for Oceanography. Oceanography 30 WAVE REPORTING PROCEDURES. Figure 14.—Simulated example of seismic sea wave on remote recorder chart paper. Greenwich Mean Time is indicated to right of tide record—corrected for a time difference of ^10 hours. At about 0435Z, the tide observer might have received the following message from Honolulu Observatory: TSUNAMI. EARTHQUAKE OCCURRED 0302Z, LAT LONG EXAM- INE TIDE RECORD 0400Z to 0600Z. REPORT ANY UNUSUAL ACTIVITY IM- MEDIATELY. After acknowledging the message, the observer should have immediately checked the tide record. Then the following sequence of messages might have been sent. At 0440Z, time A on the tide record: TSUNAMI. UNUSUAL DISTURBANCE BEGAN ABOUT 0415Z. WATER ROSE FOOT IN 5 MINUTES. FELL FOOT IN 15 MINUTES. WILL REPORT FURTHER. At 0525Z, time B on the tide record: TSUNAMI. WATER BEGAN RISING 04 1 5Z. ROSE FOOT IN 5 MINUTES. FELL FOOT IN 15 MINUTES. ROSE FEET IN 15 MINUTES. THEN FELL FEET BY 0517Z. At 0555Z, time C on the tide record: TSUNAMI. WAVE SIZE CONTINUES TO INCREASE. WATER ROSE FEET FROM 0517Z TO PEAK AT 0545Z. NOW FALLING. SHIPS HAVING TROUBLE HOLDING MOORINGS. NO DAMAGE ON SHORE. WILL CONTINUE TO RE- PORT UNTIL WAVES BEGIN TO Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Institute for Oceanography; Atlantic Oceanographic Laboratories (U. S. ); Pacific Oceanographic Laboratories; United States. Environmental Science Services Administration. Research Laboratories. Washington, D. C. : U. S. Dept. of Commerce, Environmental Science Services Administration, Research Laboratories : For sale by the Supt. of Docs. , U. S. G. P. O.
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