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Theory of largest values applied to earthquake magnitudes

Nordquist, John M. (1945) Theory of largest values applied to earthquake magnitudes. Transactions, American Geophysical Union, 26 (1). pp. 29-31. ISSN 0002-8606. doi:10.1029/tr026i001p00029.

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The theory of largest values [see 1, 2, of “References” at end of paper] requiring data on only the largest event in each of a number of equal time-intervals, recommended itself to the author as a possible way of describing the earthquake activity of a region. A preliminary analysis using the calendar month as the interval having demonstrated the applicability of the theory in this field, the author has investigated the feasibility of using still shorter Intervals [3]. In the present paper the interval used is one-third of a month—the first day through the tenth, the eleventh through the twentieth, and the twenty-first to the end of the month. This interval therefore corresponds to that of one year used in flood-analyses. A compensating change has been made in the return-period scale (Fig. 2). Incomplete results of further analysis indicate that it is feasible to use a time-interval as short as five days.

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Additional Information:© 1945 American Geophysical Union. Manuscript received July 7, 1944; open for discussion until January 1, 1946.
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Balch Graduate School of the Geological Sciences375
Issue or Number:1
Record Number:CaltechAUTHORS:20211029-160011330
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Official Citation:Nordquist, J. M. (1945), Theory of largest values applied to earthquake magnitudes, Eos Trans. AGU, 26(1), 29–31, doi:10.1029/TR026i001p00029
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:111684
Deposited By: Tony Diaz
Deposited On:29 Oct 2021 18:32
Last Modified:29 Oct 2021 18:32

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