bluuebunny/crossref_metadata_2025_split huggingface dataset:
Oblique resonances excited in the near field of a satellite‐borne electric dipole antenna
Authors: Koons H. C. , Pridmore‐Brown D. C. , McPherson D. A. 
Published: February 2008

Near‐field patterns of a short electric dipole antenna were measured in the magnetospheric plasma by an instrument aboard the polar orbiting satellite OV1‐20S. The most common antenna pattern observed at the fixed operating frequency, 300 kHz, was a dominantly biconic pattern with major axis parallel to the geomagnetic field. The measured cone angles are in reasonable agreement with those predicted by warm plasma theory.There was no discernible systematic asymmetry in these angles such as could be attributed to field‐aligned currents in the plasma or to the motion of the satellite through it.
Carte magnétique de la Sicile
Authors: Palazzo Par M. L. 
Published: February 2008

La carte magnétique que j'ai l'honneur de présenter aux lecteurs du “Terrestrial Magnetism” a été dressée d'après les données recueillies par le Professeur Chistoni et par moi en Sicile, pendant l'été 1890, chacun de nous ayant fait les levés magnétiques dans la respective partie de territoire assignée par la Direction du Bureau Central Météorologique italien. Les résultats de notre relèvement furent jadis publiés dans les “Annali” du dit Bureau, et précisément dans le volume XI, p. 3e, de la part de M. Chistoni, et dans le vol. XVIII, p. Ie, pour ce qui concernait mon concours. De plus, un court résumé de la campagne magnétique de la Sicile fut aussi inséré dans les “Rendiconti della R. Accademia dei Lincei” (vol. VI, 2d sem., série 5e), où j'ai ajouté quelques remarques au sujet de la particulière allure des lignes isomagnétiques dans les régions explorées.Mais, comme dans aucune des précitées publications n'a pu trouver place le graphique représentant le régime magnétique de l'île, il me paraît bon de faire figurer ici la petite carte, laquelle servira, de la meilleure façon, à illustrer les considérations que j'ai ailleurs développées.
The magnetic observatory at De Bilt, near Utrecht
Authors: Snellen Maurits 
Published: February 2008

At the time of the removal of the Central Observatory of the Royal Meteorological Institute of the Netherlands from Utrecht to a place which would better answer the purposes of such a building, there arose the question as to the best way of erecting an observatory for terrestrial magnetism. The mode of answering this question depends wholly on the purpose aimed at in building the observatory. It is my intention to indicate, in a few words, my opinion on the subject, and the way in which it has been realized at de Bilt, near Utrecht.During the past ten years the science of terrestrial magnetism has received a great impetus. Everywhere magnetic surveys have been instituted and finished, or are still in progress. The theoretical requirements are getting more and more exacting, and are demanding, in consequence, greater refinement in the instruments employed and in the methods of observation.
The diurnal field of magnetic disturbance
Authors: van Bemmelen W. 
Published: February 2008

It has been known for some time that the Earth's magnetic force on days of disturbance shows a characteristic change, both in amount and direction, from the normal value as derived from quiet days. In 18952 the author inquired into this phenomenon by the method briefly described below.Let hs, ds, υs; h1, d1, υ1; h2, d2, υ2; h3, d3, υ3, etc., represent, respectively, the daily means of horizontal intensity, declination, and vertical intensity, on a day of disturbance and subsequent quiet days. For a number of n cases were computed the mean values:
Karl Selim Lemström: his life and work
Authors: Tallquist H. J. 
Published: February 2008

Lemström was born on the 17th of November, 1838, in the parish of Ingå, Finland. His parents were the sheriff of the place, Carl Gustaf Lemström, and Anna Charlotta Brondin. Thus Lemström was a real country boy, and part of his life even a professional farmer.He entered the University September 14, 1857, after having frequented the high‐school of Helsingfors, and later the college of Borga. He eagerly took up the study of physics and mathematics, which courses were at the time conducted by Ad. Moberg and L. Lindelöf. On May. 31, 1862, he received the degree of “Candidatus,” graduating with high honors; the examination also included chemistry, botany, and zoology.
Verzeichniss der Publicationen des verstorbenen Professors Selim Lemström
Authors: Biese Ernst 
Published: February 2008

Academische Dissertationen:Om Volta‐induktionsstrómmarnes intensitets fórlopp, Helsingfors, 1869. (Auch abgekürzt, französisch, in Kongl. Svenska Vetenskapsakademiens handlingar, Bd. 8; Referat in Pogg. Ann., 1872, und in Archives des Sciences physiques et nat. de Genève, 1872.)
Bericht über die internationale Conferenz für Erdmagnetismus mit Luftelectricitat zu Innsbruck vom 9. bis 15. September 1905
Authors: Messerschmitt J. B. 
Published: February 2008

Gleichzeitig mit der internationalen Meteorologen Conferenz tagte deren Commission für Erdmagnetismus und Luftelectricität. Es wurden vier Sitzungen abgehalten, welche stets zahlreich besucht waren, wie die folgende Teilnehmerliste zeigt:TEILNEHMER: F. Åkerblom, Upsala; J. Algué, Manila; A. Angot, Paris; W. v. Bezold, Berlin; B. Brunhes, Puy‐de‐Dôme; V. Carlheim‐Gyllensköld, Stockholm; E. van Everdingen, deBilt; C. G. Finemann, Stockholm; L. Froc, Zi‐ka‐wei; G. Hellmann, Berlin; W. Kesslitz, Berlin; Th. v. Konkoly, Budapest; J. Liznar, Wien; H. G. Lyons, Cairo; E. Marchand, Bagnères‐de‐Bigore; E. Mazelle, Triest; J. B. Messerschmitt, München; A. Mohorovicic, Agram; A. F. W. Paulsen, Copenhagen; F. Pockels, Heidelberg; G. B. Rizzo, Messina; M. P. Rudzki, Krakau; M. Rykatchew, St. Petersburg; Ad. Schmidt, Potsdam; Aug. Schmidt, Stuttgart; A. Silvato, Rio‐de‐Janeiro; B. Sresnewsky, Dorpat; R. F. Stupart, Toronto.
Magnetic survey of the Pacific Ocean: second cruise
Authors: Bauer L. A. 
Published: February 2008

The yacht “Galilee,” engaged in the magnetic survey of the Pacific Ocean under the auspices of the Carnegie Institution of Washington, left San Diego, California, on March 2d to enter on her second cruise. She is expected to make the following circuit of about 20,000 miles by the end of this year: San Diego, Fanning Island, Samoan Islands, Fiji Islands, Marshall Islands, Guam, Yokohama, Aleutian Islands, Sitka, and back again to San Diego.1It was necessary to reorganize the scientific personnel, as the members of the staff of the first cruise belonging to the Coast and Geodetic Survey were obliged to return to their official duties at the expiration of their furloughs. The command of the vessel has accordingly now been entrusted to Mr. W. J. Peters, formerly of the astronomical and topographical corps of the United States Geological Survey. He has had considerable experience in difficult exploring work, was second in command and in charge of the scientific work of the recent Ziegler Polar Expedition as the representative of the National Geographic Society.
Magnetic observations on the hill of San Miguel, D.F., Mexico
Authors: Anda M. Moreno Y. 
Published: February 2008

The hill of San Miguel lies W.S.W. of the City of Mexico, at a distance of about 60 kilometers, and corresponding nearly to the vertex formed by the junction of the Sierras de las Cruces and Monte Alto, the Valley of Mexico being bounded on the West by the former which runs from N.W. to S.E. and enclosed by the latter on the South, nearly from due West to East. The geographical coordinates of the hill are as follows: latitude, 19° 16′ N., and longitude, 99° 19′ 17″ W. of Gr.; elevation 3807 meters.During the first half of Sept., 1903, I made a trip to this hill, on the top of which I remained for a week, and succeeded in obtaining the following results:
Mitteilung von der aufführung eines neuen magnetischen observatoriums in Dänemark und von einer Constructionsänderung bei dem wild'schen Rotationsinclinatorium
Authors: Hjort V. 
Published: February 2008

Diesen Sommer wird im “Rùde Skov” in einer Entfernung von circa 1.9 Kilometer von Kopenhagen ein magnetisches Observatorium aufgeführt. Das neue Observatorium soll an die Stelle des früheren magnetischen Observatoriums in Kopenhagen treten, da dieses Observatorium jetzt von electrischen Strassenbahnen ganz cernirt ist.Das neue Observatorium wird hauptsächlich mit Instrumenten der Wilds'schen Construction versehen werden, jedoch mit einigen Änderungen. Die Instrumente werden grösstenteils von dem Herrn Professor Edelmann geliefert.
The physical theory of the Earth's magnetic and electric phenomena.—No. III: the external electric currents and the Earth's magnetization
Authors: Bauer L. A. 
Published: February 2008

26. The hypothesis of ionic currents employed in the study at the magnetic disturbances thus far treated was based on the existence of a primary electric field. Quoting from No. I, § 11:Since magnetic observations made at various points on the Earth's surface have revealed the existence of a definite system of atmospheric electric currents, it follows at once that if the atmosphere is made more conducting at any point, an extra current will be started and set in motion by the pre‐existent electromotive force or its equivalent. The direction followed by the new current depends upon its origin, upon the direction of the electromotive force at that point, and upon the deflecting effect of the Earth's magnetic field and of the Earth's rotation on the electric carriers. In other words, while we shall look chiefly to extra‐terrestrial agencies for ionizing the air and thus splitting it up into carriers of positive and of negative charges, we look to the atmospheric electric field and to the Earth's rotation for furnishing the energy necessary to drive the ions over the Earth and by their motion produce the effects observed during a magnetic storm.
Zur Untersuchung der taeglichen Variation auf der ganzen Erde: 2.
Authors: Rykatchew M. , Schmidt Ad. 
Published: February 2008

Auf das in diesem Journal, Vol. XVIII S. 198, mitgeteilte Rundschreiben der Magnetischen Konimission haben sich bis jetzt folgende 22 Observatorien bereit erklärt, die Monatsmittel des täglichen Ganges an den international angenommenen ruhigen Tagen zu berechnen und in ihren Jahrbüchern zu publizieren:Agincourt, Apia, Batavia, Bombay, Cheltenham, DeBilt, Eskdalemuir, Greenwich, Heluan, Honolulu, Katharinenburg, Rude Skov, Pawlowsk, Pilar, Pola, Potsdam, Sitka, Tortosa, Tsingtau, Tucson, Vieques, Lukiapang.
Secular change in the British Isles, 1892–1913
Authors: Chree C. 
Published: February 2008

1. The secular change of the magnetic elements in the British Isles has of late years altered so much that a short account of it may be of interest.Results from a single station for single years are apt to suffer from instrumental errors, but the following 3‐year means from Kew Observatory are at least pretty close approximations to the truth.
Results of magnetic observations made by the United States Coast and Geodetic Survey at the time of the solar eclipse of August 21, 1914
Authors: Hazard D. L. 
Published: February 2008

In response to a request from Dr. L. A. Bauer for additional data for the study of the effect of an eclipse of the Sun upon the Earth's magnetism, the following results have been derived from the records of the five magnetic observatories of the Coast and Geodetic Survey.At each of the observatories, except Porto Rico, eye‐readings of declination were made once a minute from 10 to 15 o'clock Greenwich mean civil time on August 21, 1914. The results of these observations are not published here, however, as they are essentially the same as the magnetograph values.
Preliminary report on the results of the Aurora‐Borealis expedition to Bossekop in the spring of 1913. (fourth communication.)
Authors: Störmer Carl 
Published: February 2008

1. The three preceding communications on the results of my expedition to Bossekop in 1913 have been published in this Journal for September, 1913, and March and December1, 1915. This fourth communication comprises the material accumulated March 16, 17, 18, 21, 22, 24, and 29, and consists of about 90 auroral photographs, obtained simultaneously from the stations Bossekop and Store Korsnes. As stated before, Store Korsnes is located about 27.5 km. to the north of Bossekop, and with this extensive base we obtained considerable parallaxes.The altitudes measured—about 640 in number—present the same general features as before; this is indicated in Fig. 1.
Meteorologische und luftelektrische Messungen waehrend der totalen Sonnenfinsternis am 10. Oktober 1912 auf der Facenda Boã Vista bei Christina (Prov. Minas Geraes‐Brasilien). II—luftelektrische Beobachtungen
Authors: Knoche Von W. , Laub J. 
Published: February 2008

Zur Registrierung der luftelektrischen Vorgänge standen uns die folgenden Apparate zur Verfügung:1. Zur Registrierung Hertzscher Wellen ein Turpainscher Gewitterregistrator mit Milliampèremeter der Firma Richard‐Paris mit täglicher Umdrehung.
Proposed magnetic and allied observations during the total solar eclipse of June 8, 1918
Authors: Bauer L. A. 
Published: February 2008

Special magnetic and allied observations will be made at various points inside and outside the shadow belt of the coming total solar eclipse, by the Department of Terrestrial Magnetism of the Carnegie Institution of Washington, the Coast and Geodetic Survey, and some other institutions and individuals who have offered their cooperation.The general scheme of work proposed by the Carnegie Institution Department of Terrestrial Magnetism embraces the following:
The magnetic character of the year 1916 and review of the years 1906–1916
Authors: van Dijk G. 
Published: February 2008

The annual review of the “Caractère magnétique de chaque jour” for 1916 has been drawn up in the same manner as the preceding years; moreover it contains a review of the collaboration of the observatories during the years 1906–1916.In 1916, 36 observatories contributed to the quarterly reviews; 35 of them sent complete data. Table II of the annual review, containing the mean character of each day and each month, the list of “calm days” and the days recommended for reproduction, is reprinted here. From the review of the years 1906–1916 it appears, that altogether 52 observatories have contributed to the “Caractère magnétique”; an observatory that has been removed is taken with the new one as one station (Potsdam‐Seddin, Irkoutsk‐Zouy, Tiflis‐Karssani, Baldwin‐Tucson, Zikawei‐Lukiapang).
Results of magnetic observations during the solar eclipse of June 8, 1918, at Agincourt and Meanook, Canada
Authors: Stupart R. F. 
Published: February 2008

I have pleasure in furnishing herewith tables of magnetic values of declination, horizontal and vertical intensity for the Agincourt Magnetic Observatory and of declination for the Meanook Magnetic Observatory, these values being the results of our magnetic observations made in connection with the solar eclipse of June 8, 1918. The values furnished in each case for Agincourt and Meanook are from eye readings at minute intervals reduced to I. M. S.: at Agincourt, eye readings of differential magnetometers, and at Meanook, eye readings of magnetometer 48. The observer at Meanook was late starting owing to his having accidentally broken suspension in Elliott Magnetometer 48 on the morning of June 8.[Tables 1–8 are based upon the data transmitted to the Journal. The data are plotted and discussed in the report by L. A. Bauer, H. W, Fisk and S. J. Mauchly, begun in this issue.‐Ed.]
Sur les points du globe où il se produit une marée électrique, dérivée de la marée océanique, observe‐t‐on une marée magnétique?
Authors: Dechevrens Marc 
Published: February 2008

C'est la question à laquelle j'ai voulu répondre pour Jersey, île de la Manche, Angleterre, où la marée électrique dérivée de la marée océanique a été observée pour la première fois dans le courant de l' année 1918 (Terr. Mag., vol. 23, pp. 37–39 et 145–147; vol. 24, pp. 33–38). Cette marée électrique a‐t‐elle l'intensité suffisante pour imposer son caractère au magnétisme terrestre, à la variation diurne de la déclinaison en particulier?Ayant ici à ma disposition les trois boussoles qui m'avaient servi en Chine, à l'observatoire de Zi‐ka‐wei, de 1873 à 1887, pour les mesures magnétiques en valeurs absolues, j'ai installé provisoirement le petit aimant tubulaire avec miroir comme un déclinomètre unifilaire, disposant les choses de manière que la minute de déviation de l'aimant corresponde à un écart de 1 millimètre du point lumineux sur le papier d'enregistrement.
Magnetic disturbances, earthquake records, and aurora at Watheroo Magnetic Observatory, March, 1920
Authors: Kidson Edward 
Published: February 2008

The following magnetic disturbances as observed during March, 1920, at the Observatory are here briefly reported upon, the times given being 120th east meridian standard time.A magnetic disturbance was recorded on March 4 and 5, during which time there was serious interruption in the telegraphic service in Australia. The movements began suddenly and simultaneously in the three magnetic elements at 19h 39m P. M. (120th east meridian standard time) on March 4, but were not large until the early morning of March 5. During the night of March 5 conditions gradually returned to normal. The most important movement occurred between 5h 00m and 12h on March 5, when the horizontal intensity was reduced by about 1 per cent of its value; the changes in declination and vertical intensity were not very large.
Magnetic observations at Apia, May 29, 1919
Authors: Angenheister G. 
Published: February 2008

Tables 1 and 2 contain the five‐minute means derived from the single‐minute values of D (declination), H (horizontal intensity), and Z (vertical intensity), from 9h 58m to 16h 32m, G. M. T., May 29, 1919.Geographic coordinates of the Samoa Observatory at Apia are: latitude, 13° 48′ S.; longitude, 171° 46′ or 11h 27m W.
The magnetic storm of May 13–16, 1921, at Cheltenham Observatory, Maryland
Authors: Hartnell George 
Published: February 2008

A magnetic storm of great intensity and unusual character was recorded by the instruments of the Coast Survey Magnetic Observatory at Cheltenham, Maryland, from May 13 to May 16, 1921. The times below refer to 75th meridian standard time.The storm began at 8h 09m A.M., May 13, and after a preliminary phase, assumed great intensity from 2 o'clock P.M., until 3 A.M., on May 14. After a period of comparative quiet, another phase of still greater intensity began at 5 P.M., May 14, and continued until 4 A.M., May 15. This phase of intensity was followed by a period of comparative quiet until a third phase of equal intensity commenced at 5 P.M., May 15, and lasted until 7 A.M., May 16.
Investigation of local magnetic disturbances at Port Snettisham, Alaska
Authors: Heck N. H. 
Published: February 2008

The United States Coast and Geodetic Survey is now carrying on its work in Alaska primarily by large parties, each using a vessel and several large launches to carry on all the operations necessary to a complete survey. The magnetic work included is at present confined to compass‐declinometer observations on shore and to declination observations aboard ship made chiefly in areas of local disturbances.The adoption of steel vessels on the one hand and the vastly more satisfactory observations obtained on a non‐magnetic vessel such as the Carnegie, however, have made the continuance of observations on the Coast and Geodetic Survey vessels of doubtful desirability, except in special cases.
Supplementary note on a graphical method of computing diurnal variations by differential formula
Authors: Duvall C. R. , Ennis C. C. 
Published: February 2008

Equation (2) of our former note1 may also be written:
The interpretation of this equation as a “collinear‐points” graph shows how the graph may be very simply constructed in all cases. The scales for the given quantities, ΔH, ΔD, and ΔZ, are laid off on parallel straight lines, graduated uniformly in the same unit. The usual convention of signs, positive to the right and negative to the left, may always be adopted for these scales, thus making the “setting” more mechanical and therefore less liable to error of sign. Accurate squared paper, such as K. and E. “Standard Cross Section 1.0×10” will supply these scales already made, inking in to catch the eye being all that is further required. The array of superfluous lines in this case will detract from the usual simple appearance of the “collinear‐points” graph, but it has been found in actual practice that these lines do not materially hamper work with the graph. The ΔD and ΔZ scales are often most advantageously made identical. The distance of the zero of the ΔH scale from those of ΔD and ΔZ is arbitrary, as is also the angle the line of zeros makes with the parallel scales. By a suitable choice of this distance and angle and of the unit, 1′ or 1γ, the graph may be made to take the most favorable form for determing the required quantities.
Summary of atmospheric‐electric investigations during airplane flights
Authors: Halle A. S. , Wigand Albert 
Published: February 2008

The special advantages offered by the airplane for the solution of atmospheric‐electric problems have been utilized by the author in collaboration with Messrs. Keppe, Schlomka and Wenk, for carrying out three investigations, during which a general study was first made of the physical conditions under which work in airplanes must be done, and then corresponding methods of measurements developed.1. For determining the mean value of the ionic content of the atmosphere,2 E, for a given time, an Ebert ion‐counter was adapted to the experimental conditions of an airplane and tried out on two flights. Between altitudes of 3.3 and 5.2 km, E increases with altitude, and at 5.2 km the number of positive ions is greater than that of negative ions. A method of determining the instantaneous values of the ionic content and of the conductivity in an airplane by current‐measurement, was given.
Results of magnetic observations made by the United States Coast and Geodetic Survey at the time of the solar eclipse of January 24, 1925
Authors: Hazard Daniel L. 
Published: February 2008

In order to secure additional information regarding the effect of a solar eclipse on the Earth's magnetism, the United States Coast and Geodetic Survey arranged to have special observations made at Ithaca, New York, at the time of the eclipse of January 24, 1925, in accordance with a program recommended by the Department of Terrestrial Magnetism of the Carnegie Institution of Washington, the station selected being near the central line of the belt of totality. The program included eye‐readings of declination and horizontal intensity once a minute for a period of six hours on January 23, 24, and 25, and dip observations once in two minutes during the same periods.Through the courtesy of Professor E.G. Merritt of Cornell University, a building on the University farm at Ithaca was made available for the mounting of the instruments and three of his students volunteered to assist in the observations. These men, Messrs. Larson, Taylor, and Childs, deserve much credit for the faithful performance of the duties assigned to them under the very trying conditions which prevailed. R.R. Bodle, magnetic observer, had charge of the mounting of the instruments and made the preliminary observations. Commander N.H. Heck, chief of the Division of Terrestrial Magnetism, took charge of the magnetic observations of the regular program, while Mr. Bodle devoted his attention to observations of the atmospheric potential‐gradient with instruments supplied by the Department of Terrestrial Magnetism of the Carnegie Institution of Washington.