JPS5587911A - Ballast structure - Google Patents
Ballast structureInfo
- 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
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
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) |
-
1978
- 1978-12-26 JP JP16244178A patent/JPS5587911A/en active Pending
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