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Itm.I. Bi-hourly departures ex )ressed in percental e ofabsolute values forcosmic.my Intensity and fordisturbance ofhorizontal magnetic...

component April 2.1-.10, 19.17, !lunncayonnd CheltenhammaKnetic ohservnto ies....

at two stations during themagnetic storm ofApril 25to The primary field ofa magnetic storm isknown toarise 30,1937. The data were obtained with Compton-Bennett from external causes and the major changes ofthat field can meters, one at theCheltenham (Maryland) Magnetic be ascribed toanexternal current-system.'. This current Observatory of theUnited States Coast andGeodetic system issuch that, at great distances external toit, the...

On the Effects in Cosmic-Ray IntensityObserved During disturbance, namely,an increase in the horizontalcornthe Recent Magnetic Storm ponent,which often beginsabruptly with a "sudden commencement" (SC) this increase usuallycontinues for by a rapid decrease and a The purposeof this letter is to indicate someeffectsin an houror moreand is followed to normalafter a day or two. cosmic-ray intensity which were observed simultaneously slowrecovery...

Survey and the other at theHuancayo (Peru) Magnetic changes are approximately those which would arise from a Observatory ofthe Department ofTerrestrial Magnetism change in the earth's moment ofthe same sign asthe observed changein horizontalintensity.Thus the (iecre se...

oftheCarnegie Institution of Washington. Theaccompany....

mg figure summarizestheobserve(! effects. On itare plottedin cosmic-ray intensity which appears to follow the(!e orthetwostations, inGreenwich mean time, thedepar- crease inthe horizontal component isto!)e expected onthe tures, in percent of theabsolute value, ofeach hi-hourly !) t. is of thetheory of l.em itre an(iVailarts. Thestorm...

Thestriking similarity of thesimultaneous changes in Lemaltre and Vallarta, may provide further information on ththi-hourly means'of cosmic-ray intensity at thetwo sta- the energy distribution ofcosmic rays. tions isobvious. The separation ofthe stations excludes the Rigorous analysis based onthetheory of Lemaltre and Dosslbility that this isdue tobarometric changes. Vailarts has notyetbeen attempted pencling receipt of...

mean of cosmic-ray intensity, after eliminating bursts, effect if suhstantiated by future observatlons whe reduced toconstant barometric pressure. considered inthe light ofthe theory ofthe allowed cones of...

The decrease ofnearly four percent incosmic-ray in- additional magnetic data to...

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Back Matter books sp v037 sp037 back

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