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Can Anyone explain me how can I calculate the sensitivity of a seismometer? - Printable Version

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Can Anyone explain me how can I calculate the sensitivity of a seismometer? - krishna - 26 Oct 2017 23:33

Hi !!

Hope you all are doing well,

I would like to know if a specific seismometer can measure 1 micron/sec velocity. I have a few specs from the datasheet but I'm not a seismologist and am trying to figure out how to relate the specs to one another.


RE: Can Anyone explain me how can I calculate the sensitivity of a seismometer? - michelle_salmon - 7 Nov 2017 16:19

Hi Krishna you should have a look at these two sites.
https://ds.iris.edu/message-center/thread/280/
https://www.passcal.nmt.edu/content/instrumentation/field-procedures/working-responses-get-units-displacement

It will be dependent on the frequency of the signal so unless it the signal is in the passband of the seismometer then it becomes a bit more complicated.

Michelle


RE: Can Anyone explain me how can I calculate the sensitivity of a seismometer? - krishna - 13 Nov 2017 18:57

(7 Nov 2017 16:19)michelle_salmon Wrote:  Hi Krishna you should have a look at these two sites.
https://ds.iris.edu/message-center/thread/280/
https://www.passcal.nmt.edu/content/instrumentation/field-procedures/working-responses-get-units-displacement

It will be dependent on the frequency of the signal so unless it the signal is in the passband of the seismometer then it becomes a bit more complicated.

Michelle


Hi @michelle, thanks for your answer, the 1st URL is not working, the 2nd URL i have seen it has got the information i was looking for.

Thanks once again.


RE: Can Anyone explain me how can I calculate the sensitivity of a seismometer? - JamesRonald - 14 Nov 2017 20:27

(7 Nov 2017 16:19)michelle_salmon Wrote:  Hi Krishna you should have a look at these two sites.
https://ds.iris.edu/message-center/thread/280/
https://www.passcal.nmt.edu/content/instrumentation/field-procedures/working-responses-get-units-displacement

It will be dependent on the frequency of the signal so unless it the signal is in the passband of the seismometer then it becomes a bit more complicated.

Michelle

Great Michelle! Thanks for sharing the second link - very useful. Frankly, I'm telling you that the first link is something that has value but I really don't understand what's that about Huh

Thank you!


RE: Can Anyone explain me how can I calculate the sensitivity of a seismometer? - volt23 - 15 Nov 2017 19:41

(26 Oct 2017 23:33)krishna Wrote:  Hi !!

Hope you all are doing well,

I would like to know if a specific seismometer can measure 1 micron/sec velocity. I have a few specs from the datasheet but I'm not a seismologist and am trying to figure out how to relate the specs to one another.

Hi,
It would be more productive if u pinned your specs here, so we can help you with calculations.


RE: Can Anyone explain me how can I calculate the sensitivity of a seismometer? - yogender - 18 Nov 2017 21:38

Seismometers are usually designed to record signals on a particular range of frequencies (or periods), so they are convenient to discuss devices based on the range of vibration frequencies, which they can detect. Thus, one way to mark a seismometer is to describe the range of vibrational frequencies, which they can detect. As a versus frequency, a plot of amplification is called an instrument reaction. A device is sensitive to vibration at frequencies, for which the "reaction" curve is relatively large. Five sample instrument response curves are shown below, the frequency is shown with the horizontal axis, the equal length (period = 1 / frequency) is shown with the top horizontal axis. The vertical axis shows the ground-motion amplification factor. more visit for click here :-http://www.traininginindia.co.in/seo-training-in-india/