Statements (19)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:earthquake
|
| gptkbp:component |
gptkb:horizontal_pendulum
optical recording system |
| gptkbp:damping |
critical damping
|
| gptkbp:frequency |
about 0.8 Hz
|
| https://www.w3.org/2000/01/rdf-schema#label |
Wood-Anderson seismograph
|
| gptkbp:influenced |
gptkb:Richter_magnitude_scale
|
| gptkbp:introducedIn |
gptkb:California
1923 |
| gptkbp:inventedBy |
gptkb:Harry_O._Wood
gptkb:John_A._Anderson |
| gptkbp:recordingMedium |
photographic film
|
| gptkbp:sensitivity |
high for short-period waves
|
| gptkbp:significance |
standard instrument for local magnitude (ML)
|
| gptkbp:type |
gptkb:torsion_seismograph
|
| gptkbp:usedFor |
measuring local earthquakes
recording ground motion |
| gptkbp:bfsParent |
gptkb:Harry_O._Wood
|
| gptkbp:bfsLayer |
6
|