GEOPHYSICAL OBSERVATORY REPORT

Transcription

1 COMMONWEALTH OF AUSTRALIA DEPARTMENT OF NATIONAL DEVELOPMENT BUREAU OF MINERAL RESOURCES, GEOLOGY AND GEOPHYSICS ^^.^fi GEOPHYSICAL OBSERVATORY REPORT <.t VOL 7 NO 6 JUNE 1959 /ssued under the authority of Senator The Hon, W. H. Spooner, Minister for National Development ohk. -5v y. J rt u i. ; wopy ^

2 DEPARTMENT OF NATIONAL DEVELOPMENT Minister - SENATOR The HON. W. H. SPOONER Secretary - H. G. RAGGATT BUREAU OF MINERAL RESOURCES, GEOLOGY AND GEOPHYSICS J. M. RAYNER - Director H. TEMPLE WATTS - Deputy Director This Report was prepared in the Geophysical Section: R. F. THYER - Chief Geophysicist J. C. DOOLEY - Supervising Geophysicist

3 C 0 H T E M T S SuTj.iect Page Contributing Observatories 2, 3 & U Magnetic K-Indices Toolangi Gnangara Macquarie Wilkes Island Preliminary Monthly Mean Values of the Magnetic Element s Gnangara Solar Flare Effect Toolangi Gnangara Principal Magnetic Storms, Sudden Coimnencement s and Other Phenomena Toolangi Gnangara Port Moresby 9 10 Principal Magnetic Storms December 1957 to December 1958 Macquarie Island 11 Sudden ComraencementB ajid Other Phenomena December 1957 to December 1958 Macquarie Island 12,13 Solar Flare Effects during 1958 Macquarie Island 13 Unless otherwise stated all times are given Greenwich Mean Time in The terminology used in this report is that accepted by international convention. Should further information be required, explanation can be obtained by applying to Chief Geophysicist, Bureau of Mineral Resources, Geology & Geophysics, 203 Collins Street, MELBOUEKE, C.I. APS T R A L I A.

4 CONTRIBUTING OBSERVATORIES TOOLAITGI MAGNETIC OBSERVATORY J.R. Cleary. Otserver-in-Charge Geographic Latitude 37 32'S Longitude 1l+5''28'E Geomagnetic Latitxide -k.6.1 Longitude Instruments Kuska magnetometer N0.I4-813 Sctailze earthinductor Ho.14-9 La Cour QHMs Nos.288, 289, 290 La Cour BMZ No.119 La Cour D, H & Z recording variometers Sensitivity : D I.16 min/mm h.& Y/mm Z h.h Y/mm Recording speed : 15 mm/hour GNANGARA MAGNETIC OBSERVATORY P.M. McGregor, OtBerver-in-Cliarge Geographic Latitude 31 U7'S Longitude 'E Geomagnetic Latitude Longitude Instruments C.I.W. field magnetometer and theodolite earthinductor No.7 Askania magnetometer Ho. 5O88I0 Askanla earthinductor N0.51IIO8I La Cour QHMs No.291, 292, 293 La Cour BMZ No. 120 La Cour D, H & Z recording variometers Standard instrument : Sensitivity- : D O.9 min/mm H 3.^ Y/mm Z ;5. i+, Y/mm Recording speed : 15 mm/hour Rapid-run instrument: Sensitivity : D 1.0 min/mm Slkr.5' Y/mm Z 1.5 Y/mm Recording speed : 180 mm/hour Askania (Eschenhagen type) H variometer with visual recorder Sensitivity : 3 Y/mm Recording speed : 20 mm/hour

5 COiraKIBUTING OBSERVATORIES MACQPARIE ISLAHD MAGNETIC OB3ERVATOBY R. Holllngsworth. Observer-ln-Charge Geographic Latitude 5i; 30'S Longitude 'E Geomagnetic Latitude Longitude Insti*uments La Cour QHMs Nos.177, 178, 179 La COUP BMZ HO Kew pattern magnetometer No.158 La Cour D, H & Z recording variometers Sensitivity : D 0.9 min/ram H r/mm Z 1 ii. 1 Y/mm Recording speed : 15 mm/hour MAWSON MAGKETIC OBSERVATORY M. Kirton, Observer-in-Charge j- Geographic Latitude 67 36'S. Longitude 62 53'E Geomagnetic Latitude Longitude Instruments La Cour QHMs Hos.300, 301, 302 La Cour BMZ No.62 La Cour D, H & Z recording variometers Sensitivity : D 0.8 min/mm H 9.9 T/mm Z 10.3 Y/mm Recording speed : 15 mm/hour Bar fluxmeter magnetometer N-S, E-W and vertical coii5)onents

6 COWTRIBUTIKG 0BSE5VAT0RIES WILKES MAGNETIC 0B3ERVAT0BY R. Underwood. Otserver-in-Charge Geographic Latitude 66''15'S Geomagnetic Latitude Longitude Longitude 'E i79.2 Instruments C.I.W. field magnetometer and theodolite earthlnductor Ho.28 Ruska D, H & Z recording variometers Standard instrument : Sensitivity- D 1i. 3 min/mm H 2U.2 Y/mm Z 24.7 Y/mm Recording speed 20 intn/hoiar Rapid-run instrument: Sensitivity D I.2 min/mm H 5.2 Y/mm Z 5.7 Y/mm Eecording speed 240 mm/hour PORT MORESBY MAGUETIC OBSERVATORY J.A. Brooks. Observer-in-Charge Geographic Latitude 9 2k.'5S Geomagnetic Latitude Longitude Longitude 'li ME Instruments La Cour QHMs Nos.187, 188, 189 La Cour BMZ No. 68 La Cour D, H' & Z recording variometers Sensitivity Eecording speed D 0. 9 min/mm H 6.1 Y/mm Z 7.1 Y/mm 15mm/houp

7 MA&KBTIC K-IMDICES FOB JUME - TOOLANGI Range : for lower limit of =9 is 500 gammas Day K-Indices K-Sum h k 3 3 (3) X X X X U k i) ih k U k it k k k 3 3 2k k 3 5 J+ k i+ U 2 30 PRELIMINARY MEAN VALUES OF THE MAaHETIC ELEMENTS FOR JUlffi TOOLANGI - Declination ) Will be published Horizontal Intensity ) when Vertical Intensity ) available Day Began K K' h m SOLAR FLARE EFFECT i Confirmed by I.P.S. Canberra.

8 MAGKETIG K-IKDICBS FOE - GNAInGARA Range for lower limit of K: =9 is 350 gammas Day K-Indices K-Sum k k k k k k k U k U k ii k 3 5 k k h 2 27 PKELIMINAHY MEAN VALUES OP THE MAGHBTIC ELEMENTS FOR JUKE GEAKGABA - Declination 2 51.'8 west Horizontal Intensity gamma Vertical Intensity gamma SOLAR FLAEE EFFECT Day 16 Began la m K K' 3 1 Confirmed by I.P.S. Canberra.

9 t^ghetic K-IiroiCES FOB JUHE - t'lacquasie ISLAUD Range for lower limit of K=9 is 1500 gammas K-Indices K-Sum f i k 2 k h 4 3 k k i k # k k k i h 6 k k 3 15 j 2k k f 25 A k h k h 37 PRELIMIHABY MEAH VALUES OP THE MAGNETIC ELEMENTS FOB JUKE MACQUABIE ISLAIID - Declination ) Will te Horizontal Intensity ) published when "Vertical Intensity ) availatle

10 MAGKETIC K-IKDICES FOB JtJME - WILKES Eange for lower limit of K: =9 is 2500 gammas Day K-Indioes E-Sum k k U PRELIMIHARY MEAK VALUES OF THE- MAniTCTTn m.-rmtcntr -pqe JTOffi WILKES - Declination ) Will be published Horizontal Intensity ) when Vertical Intensity ) available

11 PRINCIPAL MAGNETIC STORMS AT TOOLAHGI DURIHG JUHB sudden max. activity storm time commencements act- 0 to 9 date "begin end type amplitudes iv- ity day 3-hr per. K D H Z D H Z h m d h ' Y Y I Y Y ssc^ -3'' +2+5'' +2 m 11 U m i ssc ms 29 3,k 6 25 llj-0 60 SaPDEM COMMEHCEMEMTS AKD OTHER PHEKOMEKA AT TOOLAWGI BPRIHG JOHE Sense of Movement Day Time Type H D Z h m 11 _x ssc^a + 1i bp B bp B si B U 51 bps B UO bs A SBC B bps A si A bs B Remarks PRINCIPAL MAGHETIG STORMS AT GNANGARA DURING JONE sudden storm time commencements date begin end type amplitudes D H Z h. m d h activity max. activity 0 to 9 3-hr day per. K D H Z XI 1 1 SUDDEN COMMENCEMENTS AKD OTHER PHENOMENA AT GHANGARA DURING JUNE Sense of Movement Day Time Type H D Z h m X _x _x s s c ^ ssc A bs B pt B ssc B Remarks

12 10 PKINCIPAL MAGNETIC STORMS AT POET MORESBY DUBIMG JUME sudden storm time c ommene ement s date "begin end type amplitudes D H Z activity max.activity 0 to 9 3-hr day per. K D H Z n i l r e c o r d e d SaPDEW COMMEHCEMEKTS AMD OTHER PHENOMENA AT PORT MORESBY DURING JUHE Sense of Movement Day Time Type H D Z h m ssc B i+ 51 bp C ssc B + + Remarks

13 n PRIHGIPAL MAGNETIC STORMS AT MACQUASIE ISLAND DURINS DECEMBER FEBRUARY. MARCH. MAY. JXIHS. JULY, AUGUST. SEPTEMBER. OCTOBER. DECEMBER ^ m U 1222 BSC -T) H-T +13 s Mar m May Bsc^ +17^ -150^+28 ^ m ssc^ ms June _ ^ ssc"^ +2^ -31^ +2k m J^y X T X X SBC J +27r s BSC +22^ -75^ +63* M Aug Y TT V X ssc^ -22^ U ms BBC ms ms Sept sso +82-1ifi+ +35 s BSC ms Oct BBC^ +5^ +88* BSC Dec BSC ms m ms m storm time sudden commencements act- iate "begin end type an^ilitudes ivity D H Z hm d h I Y r Dec Jan B P BSC* +2* +37* 0 m max.activity 0 to 9 Ranges 3-hr day per. K D H Z t Y Y ,6,7, 1,2, ,U 13 i+, U ,1+, Ok , ,1+, ,7 13 5, h ^ 89 > (200)(ll+l+2) (128) 1795 i _c > U8 8 (11+9) I (289) k (126) 1050 a - storm not flnis^ied at commencement of next storm b - commencement too disturted and oscillatory to give c - too disturbed for measurement of range (212) (117) _c 2085 (1027) amplitudes No storms were recorded during January, April and November 1958 at Macquarie Island.

14 12 SUDDEN COMMEKCEMEKTS AKD OTHBB PHEHOMENA AT MACQPARIE ISLAIg) DURING JAHUAEY TO DECEMBER 1958 Sense of Sense of Movement Movement Day Time Type H D Z Dayli m Time H D Z h in Jan July si A bs B "x tp B BSC A t)s C si B ( + ) bs B si B ssc B bps A si B ; 18 bp G - + m bs B bp ^G "x ^x Taps B ssc A ;3 ssc C bs B bps C - ± bp A bs B si ^ x ^x 2k bp J SSC^B ssc C + Aug Pet bs G bs B bps. ""x +X ssc^ ssc: ^x ~x X ; ssc A ssc" bs ^C ; 01 2;1 BSC B ssc C - _x 22; 13 UO si B Mar si A BSC C Sept ssc C si B U9 ssc C ; 12; 12; ssc A ; BSC C bps G bps B si G k2 bps A bp G ssc C ; 11 02; si G Apr 25 02; 08 ssc A bs C _ + _ si G ; 08 2;9 ssc C _x ssc G si B Oct May 02; bp G si B bp G ssc 0 _ si B bs B bps B si C bp C "x X 26 12; 11 si C ssc^a bs B _ ; si C si C ssc C i C si G X ssc A June Nov bp G si n + _ si B ; ssc^^ X bs G - ± si C _ si B bp C ; si G ; si B + 22; 12 2;0 si C ; ssc C si G bps. ^ ~x ^x ^x ssc ^ bp B - + +

15 13 SUDDEH COMMENCaiEKTS AND OTHER PHENOMENA AT MACQUARIE DURING JANUARY TO DECEMBER 1958 ISLMD Da^ Time Type h m Dec Oij ssc^ ssc C BSC C k ssc C si B si C si bp B bp C Sense of Movement H D Z > i + SOLAR FLARE EFFECTS Day Began K K' h m Apr U U July D only Doubtful Aug h3 D only Doubtful i6 Ok 35 D only Doubtful