The other problem is ground response. My sensors are sitting on land fill or mud, and 
my ML numbers are always .5 to 1 ML higher then the reported magnitude.

Regards,
Larry Cochrane
Redwood City, PSN

On 4/18/2012 1:35 AM, Dave Nelson wrote:
>
> Hi Geoff
>
>     I cant really see the possibility of that. the main reason is that every
> seismometer
> is going to have its own response. Then you have all the variations in preamps.
> different systems with different lengths of cable runs and their variations
> in losses.
>
> cheers
> Dave
>
>
> At 08:36 PM 17/04/2012 +0000, you wrote:
>>Hello PSN;
>>
>>It it possible for someone to artificially build
>>a set of reference files for everyone using WINSDR
>>to properly adjust the error number for richter
>>magnitudes ?
>>
>>Like a 16 bit PSN file.
>>
>>Like;
>>
>>One file for Ml=4
>>One file for Ml=6
>>
>>The frequency range/amplitude is important for the test file.
>>
>>If everyone calibrates somehow to match that file
>>we all should get similar numbers for similar quakes.
>>
>>I have never been able to set that number right
>>even tho i know the other numbers are pretty close.
>>
>>Like make/create an Ideal wave train for a velocity sensor.
>>
>>A standard if you like.
>>
>>Maybe there is a calibrated system already out there we all can use
>>as a reference, in that case, show me/us/psn the web site ?
>>
>>If I have failed to answer any questions I have been
>>off line several days rebuilding my OS which happens
>>every few months thanks to stupid DRM stuff which is NOT
>>self correcting when you make system wide changes to NTFS security
>>settings. Im always looking for general security settings
>>which make NTFS be like a FAT 64 OR ??
>>Everybody (full permissions) setting will not do it.
>>???
>>
>>geoff
>>
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