GB2017303A - Improvements in or relating to vertical seismometers - Google Patents

Improvements in or relating to vertical seismometers

Info

Publication number
GB2017303A
GB2017303A GB7909579A GB7909579A GB2017303A GB 2017303 A GB2017303 A GB 2017303A GB 7909579 A GB7909579 A GB 7909579A GB 7909579 A GB7909579 A GB 7909579A GB 2017303 A GB2017303 A GB 2017303A
Authority
GB
United Kingdom
Prior art keywords
boom
flat spring
seismometer
pivoted
applies
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.)
Granted
Application number
GB7909579A
Other versions
GB2017303B (en
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB7909579A priority Critical patent/GB2017303B/en
Publication of GB2017303A publication Critical patent/GB2017303A/en
Application granted granted Critical
Publication of GB2017303B publication Critical patent/GB2017303B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
    • G01V1/18—Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements
    • G01V1/181—Geophones

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

A vertical seismometer comprises a horizontal boom 2 carrying a mass 1 frictionlessly pivoted about a horizontal axis 3. The boom is supported by a pre-stressed vertically extending flat spring 4 having one end rigidly attached to the boom adjacent to and intersecting this axis so that movement of the boom applies a turning moment to the flat spring at its attachment end. A further pre- stressed flat spring 5 pivoted at right angles to the other end of the first- mentioned flat spring has its other end rigidly connected to the frame 13 of the seismometer and applies a constant force along the longitudinal axis of the latter spring towards the end attached to the boom. The seismometer may incorporate a negative feedback system (1, 16, 16', 19, 22) that opposes movement of the mass 1 whereby the operating frequency range of the instrument is extended. <IMAGE>
GB7909579A 1978-03-15 1979-03-19 Vertical selsmometers Expired GB2017303B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7909579A GB2017303B (en) 1978-03-15 1979-03-19 Vertical selsmometers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1027678 1978-03-15
GB7909579A GB2017303B (en) 1978-03-15 1979-03-19 Vertical selsmometers

Publications (2)

Publication Number Publication Date
GB2017303A true GB2017303A (en) 1979-10-03
GB2017303B GB2017303B (en) 1982-10-06

Family

ID=26247413

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7909579A Expired GB2017303B (en) 1978-03-15 1979-03-19 Vertical selsmometers

Country Status (1)

Country Link
GB (1) GB2017303B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115373019A (en) * 2022-07-19 2022-11-22 中国科学院地质与地球物理研究所 High-sensitivity wide-band full-dip geophone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115373019A (en) * 2022-07-19 2022-11-22 中国科学院地质与地球物理研究所 High-sensitivity wide-band full-dip geophone

Also Published As

Publication number Publication date
GB2017303B (en) 1982-10-06

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee