摘要:

No history of science and scientists in the Netherlands East Indies would be complete without on account of the explorations of Vening Meinesz with the splendid cooperation of the Netherlands Navy.Among scientists Vening Meinesz is classified as a geodesist. He was born at 's‐Gravenhage (The Hague) on July 30, 1887, as the son of S. A. Vening Meinesz, Burgomaster of Rotterdam, and later of Amsterdam. He attended the “Hoogere Burgerschool” and afterwards the Technical College at Delft, from which he graduated in 1910 as a civil engineer. In 1915 he obtained the degree of Doctor of Science from the University of Utrecht, where in 1927 he was appointed Professor of Geodesy. In 1937 he became chairman of his Government's Committee for Geodesy. In 1933 he had been elected President of the Association of Geodesy of the International Union of Geodesy and Geoph

ISSN:0002-8606    

DOI:10.1029/TR026i002p00183

年代:1945

数据来源: WILEY

摘要:

General statement—In the summer of 1944, 521 gravity‐meter stations were established in the Maritime Provinces of Canada. This work was a cooperative venture carried out by the Dominion Observatory and the writer, representing the Special Committee for the Geological and Geophysical Study of Continents of the American Geophysical Union. The Instrument used was the X‐type gravity‐meter on loan to the American Geophysical Union by the Humble Oil Company.Location of stations—Most of the stations were located in the southern and eastern portions of the Province of New Brunswick and were established by A. H. Miller of the staff of the Dominion Observatory. In addition to these stations, traverses crossing southern Quebec, New Brunswick, and Nova Scotia were established by the writer assisted by Mr. Miller. All station locations are indicated on the iso‐anomaly maps of New Brunswick and Nova Scotia in Figu

ISSN:0002-8606    

DOI:10.1029/TR026i002p00191

年代:1945

数据来源: WILEY

ISSN:0002-8606    

DOI:10.1029/TR026i002p00196

年代:1945

数据来源: WILEY

摘要:

A question of interest to geodesists and geologists is whether or not the continents are moving. The answer from modern observation is in the negative. World‐longitude operations by radio carried out under the auspices of the International Longitude Commission indicated only shifts in longitude which are within the errors of observation [see 1 of “References” at end of paper]. A similar result was found for the radio operations at Kornok, Greenland [2]. No definite changes in mean latitude are shown by observations made with the zenith‐instruments of Washington, Greenwich, and the International Latitude stations when modern star‐places and proper motions are used in the r

ISSN:0002-8606    

DOI:10.1029/TR026i002p00197

年代:1945

数据来源: WILEY

摘要:

The method of investigating the influence of pressure‐variations upon release of earthquakes is given. Records of the barometric readings at a place in the earthquake‐region for 07h00mare used for the second day before the quake (p2), for the first day before (p1), and for the day of the quake itself (p0). Differences (p1‐p2) and (p0‐P1) are computed. Positive differences indicate rising pressure‐tendency. Differences smaller than one millibar are take

ISSN:0002-8606    

DOI:10.1029/TR026i002p00201

年代:1945

数据来源: WILEY

摘要:

Since the reservoir behind Boulder Dam started to fill in 1935, several hundred small earthquakes have been felt in the adjacent area and several thousand have been recorded since the first seismograph was installed at Boulder City early in 1938. Epicenters of several hundred of the latter have been located, in large part along known or suspected faults on the southern margins of the large lower basin in the reservoir. It is believed that the crustal block upon which this section of the reservoir rests has been tilted downward several inches along these faults and that the granitic massif south of the faults has not partaken in the downward movement. It is known that settlement of areas of sedimentary and volcanic rocks near the lake is somewhat greater than similar areas of granitic rock. It is believed that this settlement is the cause of large numbers of the local shocks partly because the peak occurrence‐distribution is usually associated with peak seasonal loads in the reservoi

ISSN:0002-8606    

DOI:10.1029/TR026i002p00203

年代:1945

数据来源: WILEY

摘要:

The principle of conservation of vorticity with reference to an inertial frame is reviewed and its consequences on a rotating spherical Earth considered. It is shown that if the absolute vorticity of an atmospheric element were conserved, then the vertical component of the vorticity would vary if the absolute longitude and latitude were changed. Actually, in the atmosphere there are many factors that change the absolute vorticity of the fluid elements. The buoyant force (flotation‐force), the baroclinic nature of the atmosphere, divergence‐viscosity, turbulence, and non‐adiabatic processes are some of the more important of these factors. Some of the ways in which the buoyant effect tends to change the vorticity are discussed here in qualitative terms. A method of attack is suggested for a more complete treatment of the motions of the Earth's air‐cover.Equations showing the relationship between the divergence and the time‐rate of change of the vorticity are a

ISSN:0002-8606    

DOI:10.1029/TR026i002p00205

年代:1945

数据来源: WILEY

摘要:

In the first week of the War in December, 1941, there were published in Manila 500 copies of a new monograph of mine entitled “Upper‐air characteristics (1–4 km) of the Philippine and adjacent regions.” There was time only to distribute a few copies to Navy and Pan‐American Airways men; the rest were successfully hidden from the Japanese, though the hiding place had to be changed thrice. Unfortunately, however, though endeavors were made before internment to save the papers by distribution to others, absolutely all copies seem to have been burned either in the siege of Manila or at Corregidor; not one has so far been recovered in spite of diligent search by both Army and Navy men. There were also, burned the original and carbon copies of the manuscripts of seven other original articles which I had composed during occupation of Manila by the Japanese before I was actually interned at Los Baños in July, 1944. Due to the imminent danger of search, none of these could be taken with me to the internment camp, for they would have been seized and translated into Japanese like all my other monographs, and used for hostile purposes. They therefore had to be left in trustworthy hands in Manila, but they all perished in the flames of the siege together in some cases with the

ISSN:0002-8606    

DOI:10.1029/TR026i002p00213

年代:1945

数据来源: WILEY

摘要:

Only a few observations could be made during the hurricane in the night; the majority were made in the morning, after the hurricane‐weather had been replaced by bright sunshine. In the following, some unpretentious remarks are given; so unassuming they are, that it would not have paid to study the immense literature in order to find out how far similar considerations had been made. Their value, if any, may lie in the fact that the inferences were drawn immediately from actual observation

ISSN:0002-8606    

DOI:10.1029/TR026i002p00217

年代:1945

数据来源: WILEY

摘要:

It is obviously impossible to draw any clear and absolute line of demarkation between climatology and meteorology; the two subjects occupy too much ground in common. Until a very few years ago most of us, nevertheless, had a perfectly clear idea of what we meant when we spoke of climatology as a separate and special field of study. We knew it as we know a path we have followed for years, without being able to reduce it to an equation in geographic coordinates—perhaps even without being able to describe it. But still we were able to follow it again and again without any danger of getting lost. Today our path to climatological knowledge has been confused by a number of newly erected road signs all bearing the same name and all pointing in different directions. One might almost suspect that it had been done deliberately, in order to confuse the “invading” sciences which come in search of the knowledge they need for the solution of their own pro

ISSN:0002-8606    

DOI:10.1029/TR026i002p00221

年代:1945

数据来源: WILEY