摘要:

Mr. President: The Committee on Award of the WILLIAM BOWIE MEDAL has selected a meteorologist for the 1945 award, and I have been asked to present to you the name of Dr. JAKOB BJERKNES, Head of the Department of Meteorology, University of California in Los Angeles, as the seventh recipient and the first meteorologist to be awarded the WILLIAM BOWIE MEDAL. He has been duly elected by the Committee in accordance with the terms of the award. The exigencies of war prevent him from being present at this meeting of the American Geophysical Union.

ISSN:0002-8606    

DOI:10.1029/TR026i001p00001

年代:1945

数据来源: WILEY

摘要:

We are living in the midst of a world‐crisis, which has grown progressively more acute throughout the past half‐century. This situation stems from a lack of proper functional development and articulation of the world's overall economic, political, and strategic organizations, and it is through critical, cooperative, and quantitative study of these conditions that we may reasonably hope to sort out the facts from the fallacies, and so coordinate and organize our information as to lead us both to correct appraisals of therelativecapacities and resources of the various national populations—and to such international arrangements as will be mutually beneficial and satis

ISSN:0002-8606    

DOI:10.1029/TR026i001p00003

年代:1945

数据来源: WILEY

ISSN:0002-8606    

DOI:10.1029/TR026i001p00011

年代:1945

数据来源: WILEY

摘要:

The purpose of this paper is to enumerate the more important datums used in Alaska, to show how they were connected to the North American 1927 Datum and the changes involved, and to discuss theoretical problems encountered and the conditions under which the observations were made.

ISSN:0002-8606    

DOI:10.1029/TR026i001p00013

年代:1945

数据来源: WILEY

ISSN:0002-8606    

DOI:10.1029/TR026i001p00018

年代:1945

数据来源: WILEY

摘要:

An optical‐reading theodolite has been developed for military purposes by W. and L. E. GURLEY. This new theodolite is comparable in size to the WILD and TAVISTOCK theodolites. A complete description of the new instrument furnishes the basis for a comparison with the most important features of the WILD, TAVISTOCK, and PARKHURST theodolites. The speed and convenience in use and ruggedness and compactness in design make the instrument highly desirable for many types of survey

ISSN:0002-8606    

DOI:10.1029/TR026i001p00019

年代:1945

数据来源: WILEY

摘要:

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 s

ISSN:0002-8606    

DOI:10.1029/TR026i001p00029

年代:1945

数据来源: WILEY

摘要:

General Features—This instrument was designed and constructed primarily for the registration of vibrations from dynamite blasts, traffic, machinery, and general Industrial sources. For vibrations of a frequency of three cycles per second or more, it gives a record directly proportional to displacement. With a magnification factor of 25 over this range, it gives clear, full registration from about 0.0005 to 0,035 inch. The maximum on‐scale displacement which can be recorded usefully on any one of the components is 0.080 inch. Over a period of 15 years, experiments have shown that these constants are best adapted to the service for which this was desig

ISSN:0002-8606    

DOI:10.1029/TR026i001p00033

年代:1945

数据来源: WILEY

摘要:

This study was designed to investigate the deepening and filling of waves In the Westerlies as revealed by five‐day mean charts of the pressure‐distribution at upper levels. On such charts frontal discontinuities are of little significance. Furthermore,the wave‐lengths of the waves found on these charts are in general much longer than those of the usual cyclone‐wave. Therefore, the study has been confined to the general theory of the stability of the Westerlies, where physical properties change continuously from place to place, rather than to the classical wave‐theory of cyclones, where physical properties change in a discontinuous fashion at frontal b

ISSN:0002-8606    

DOI:10.1029/TR026i001p00037

年代:1945

数据来源: WILEY

摘要:

A “degree‐day” Is one when the average temperature is 64°F. A day which has an average temperature of 54° is sometimes called “11‐degree‐days”, and one with an average temperature of 0°, “65‐degree‐days”. However, instead of calling a single zero‐day 65‐degree‐days, here it is sa

ISSN:0002-8606    

DOI:10.1029/TR026i001p00045

年代:1945

数据来源: WILEY