N0 Objection To Declassifioat on in Full 2013 11 19 VNLCue- z gueem pr _hum'l - 6 SLC Li nu aspen Saw wa-izliszd' in A it - Department of Energy I Washington DC 20585 November 3 1979 MEMORANDUM FOR Henry Owen Attached please find the description of an event that may have some bearing on the South Atlantic incident of September 22 In an effort to search all possible sources of corroborating data DOE_teohnioal staff Defense Programs in cooperation with Los Alamos inquired if the Areoibo Atmospheric Observatory had detected any anomalous upper atmospheric acoustic waves during the time period of interest - The initial examination of this travelling ionospheric disturbanoe indicates a signal that possibly may confirm - the signal from the VELA system The connection between nuclear detonations or other phenomena and acoustic wave detection is less well calibrated than the VELA information Accordingly a good deal of analysis will need to be undertaken before reaching a final assessment of this information have - instructed DOE-staff to undertake this analysis in cooperation -with JAEIC and I-am sending copies of this memorandum to other pertinent members of the SCC group by'personal messenger I believe the group formed by Frank Press should be appriased of i this possibly pertinent evideege - iJohn Deutoh tender Secretary BUTI ON co Harold Brown Frank Press - - Bruce Clark i CY HBrown Tom Pickering CY 3A a ppress Cy 4A BClarke_ CY 5A 1 9 le Mia CY 53 JDeutC 1 CY 73 ISA Subj File Cy 8A RChapman on 131 43 -hof hi i ii i i ti lair w Os 1an 3 1999 rw i_ seems f1- - Jlu afl e N0 Objection To Declassificat on in Full 2013 11 19 - There-exists en embiguity in the possible propagation veloeities N0 Objection To Declassification i1 Full 2013 11 19 - I - 31 21u22 September Acoustic Gravity Wave De-tection Arecibo Innospherie Observatory Puerto Rico Facility oneretionel in support of onugoing LASL program IonoSpheric electron density profile shows acoustic gravity wave between an 07152 peeking at 06302 Sooth to north velocity component greater then 250 HIS - Disturbance involved coupling to ionosphere in 200 to 266 KM eltitude suggesting fully ducted wave Conclusions Wave shape of grerity wave consistent with treyeling-ionospneric disturbance phenomenology under study by ISA HIS 630 HIS ambiguity due to different moose of propagation Possible ranges to the source are therefore 8700 KM or 5300 KM - Renae contours from Areeibo consistent with the YELA field of View footprint The period of the observed gravity wave is longer then whet is typically expected by a factor of at least 2 eould be due to none linear dispersion in the media Acosstie gravity wave phenomena consistent with either an earthquake or an exPlosion source - ts at Similar observations have been seen in the past from SoV1et tes Novaya Zemlye in 1961 Additional data from sensors in the South America and Africa #9310 required in order to resolve ambiguities No Objection oDeclassmcanon NLC 6 72 6 47 9 I navemucr 1g79- milk - l I magma oassavmmus LN Eh a THIS Documirgac 201151515 No 3 c 0953 SERIES 0 $311011 9990 - 31 11 5 21600 wry-M19511 1 mm 12 31 99 Data 5 gs 1 3 Mam Krikari an 13 1 Haze 1 63 Pi 150 1 Gpdbl 1 1 M bUtmm Qg ygi Hanan 55111311 we 31 - hq I11f-f - a d Nobbje'ction To Decl ssi a on En Full2013111 19 nor-- mu Hi- 56 vomit u gang-Hf If No Objection To Deciassif cation in Full 2013 11 19 NLC-6-72 6- 47 9 wig haccrg-GE959-tas AW 5 AI I 1 ml dam ua J 3 my 1 513 a I I 93 'Ein A- 1 4- MW 1 59 55 31 I - w M Mam-uni GAIL m- m rt If f- - f-z ki In an dings-Rim Pp 1 er Rm 9w 5mm 11451 ch rgm Mun Wi g r91 I if $ 93er fn San rm-Cu dawns-mm Jars-t 31920110 'UB-nm them hit-I1 if 5 1- was v-erefzmn-m ingrown Ln-k 2g - 1 1 6 d II 14-43 M239 - 5 I - is at Hertha-I harm - 'h f g 3W Jimlr ll 7 iv I fr 3 Elsi-Him - thr1k - I I Faun 391Hu m o with Im 316- Til 1 3 139 H a I - qrfm 13511' an w lb-Han in lrfq i Ann-I'Mmb kHz-Arr iw-mw 34 erm P3 1 5 sin-mim- Ith- 'f In I I r 7 1 3 M at - a m N 547 in 13 1 51MB 5-1 Erma 9 5 EC 3mm Objection To DeciaSsifEcation in Full 2013 11 19 mos-72-64759 This document is from the holdings of The National Security Archive Suite 701 Gelman Library The George Washington University 2130 H Street NW Washington D C 20037 Phone 202 994-7000 Fax 202 994-7005 nsarchiv@gwu edu