JPS5587911A - Ballast structure - Google Patents

Ballast structure

Info

Publication number
JPS5587911A
JPS5587911A JP16244178A JP16244178A JPS5587911A JP S5587911 A JPS5587911 A JP S5587911A JP 16244178 A JP16244178 A JP 16244178A JP 16244178 A JP16244178 A JP 16244178A JP S5587911 A JPS5587911 A JP S5587911A
Authority
JP
Japan
Prior art keywords
speed
ballast
submergence
ballasts
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16244178A
Other languages
Japanese (ja)
Inventor
Tadayoshi Matsuzaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP16244178A priority Critical patent/JPS5587911A/en
Publication of JPS5587911A publication Critical patent/JPS5587911A/en
Pending legal-status Critical Current

Links

Landscapes

  • Geophysics And Detection Of Objects (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)

Abstract

PURPOSE: To reduce the shock in laying the apparatus on the seabed and to improve the precision of the laying location by combining plural ballasts the underwater weights and shapes of which are different from each other and by controlling the speed of submergence according to the depth of water.
CONSTITUTION: The spherical container 2 for the seismometer is attached to the fixed bed 3, plural ballasts AWD the underwater weights and shapes of which are different from each other are fit on the lower side of the bed 3. When the submergence speed of the apparatus, weight of the ballast and shape factor of the ballast are v, w and f respectively, the formula v∝w.f holds. When the ballasts are arranged to be broken in the order of AWD every time a ballast reaches a fixed depth of water, the submergence speed can be reduced as the water becomes deep. In this way, the observation apparatus can be reached the seabed without a shock to the apparatus, and it can be submerged at higher speed in the upper layer of the sea wherein the affection of the waves and tidal current can be disregarded in order to improve the precision of the laying location.
COPYRIGHT: (C)1980,JPO&Japio
JP16244178A 1978-12-26 1978-12-26 Ballast structure Pending JPS5587911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16244178A JPS5587911A (en) 1978-12-26 1978-12-26 Ballast structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16244178A JPS5587911A (en) 1978-12-26 1978-12-26 Ballast structure

Publications (1)

Publication Number Publication Date
JPS5587911A true JPS5587911A (en) 1980-07-03

Family

ID=15754664

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16244178A Pending JPS5587911A (en) 1978-12-26 1978-12-26 Ballast structure

Country Status (1)

Country Link
JP (1) JPS5587911A (en)

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