TNAG-0836-FCO40-1044-Comprehensive-Test-Ban-Treaty-national-seismic-stations-on-U-1979 — Page 31

FCO40 Hong Kong Department Records 聯邦事務部香港部檔案 All

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CONFIDENTAL

TO RECONSIDER THE MATTER: BRITISH VIRGIN ISLANDS, CAYMAN ISLANDS, TURKS AND CAICOS ISLANDS, BERMUDA, MONTSERRAT, ASCENSION ISLAVD, ST HELENA, TRISTAN DA CUNHA, BRITISH ANTARCTIC TERRITORY, SOUTH GEORGIA, ANGUILLA.

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4. THE EXACT DESIGN OF NSS IS STILL UNDER NEGOTIATION. AS CURRENTLY ENVISAGED, AN NGS WILL CONSIST OF A PACKAGE OF SEISMOMETERS AND ELECTRONIC EQUIPMENT BURIED IN CONTACT WITH ROCK AT THE BOTTOM OF A BOREHOLE 18 CENTIMETRES IN DIAMETER AND 120 METRES IN DEPTH. THE INSTRUMENTATION IN THE BOREHOLE WILL. BE CONNECTED TO RECORDING AND DATA TRANSMITTING SYSTEMS ON THE SURFACE. SIGNALS FROM THE SEISMOMETERS WILL BE TRANSMITTED CONTINUOUSLY (PROBABLY BY SATELLITE) TO DATA CENTRES IN WASHINGTON, MOSCOW AND LONDON. THE POWER WILL COME FROM A DIESEL GENERATOR WITH A FUEL SUPPLY ADEQUATE FOR A NUMBER OF MONTHS.

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IF SATELLITE TRANSMISSIOV 13 USED, A SMALL TRANSMITTING DISH AERIAL WILL BE NEEDED. ALL THE EQUIPMENT WOULD BE SUPPLIED. THE TOTAL SITE AREA WOULD NOT BE MORE THAN 100 SQUARE METRES.

5. NSS ON BRITISH TERRITORY WOULD BE OWNED BY HMG WHO WOULD BE RESPONSIBLE FOR THEIR OPERATION.

THEY WOULD NOT BE CONTINUOYSLY MANNED.

SOVIET PERSONNEL, ACCOMPANIED BY UK PERSONNEL, MIGHT TAKE PART

IN THE SELECTION OF A PRECISE SITE. THEY WOULD ALSO HAVE THE RIGHT TO BE PRESENT FOR THE INSTALLATION OF THE SEISMOMETERS AND ELECTRONIC EQUIPMENT AND WHENEVER INSPECTION, REPAIR AND

MAINTENANCE OF THE EQUIPMENT WERE NECESSARY (PERHAPS ONCE A YEAR).

ACTION

6. WE SHOULD WELCOME YOUR COMMENTS, BY 16 MARCH IF POSSIBLE,

ON THE FEASIBILITY IN PRINCIPLE OF ESTABLISHING AN NSS ON YOUR TERRITORY. THE DETAILS OF THE CT3 NEGOTIATIONS AND THE SUGGESTION OF NS3 ARE CONFIDENTIAL. ANY LOCAL CONSULTATIONS SHOULD BE

ON A NEED-TO-KNOW BASIS, YOU WILL WISH TO HAVE IN MIND THAT SMALL ECONOMIC BENEFITS WOULD ACCRUE IN THE TERRITORY. PLEASE REPORT UNDER THE FOLLOWING HEADINGS:

2

CONFIDENTAL

| (A) CONSTITUMONAL

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