of course, I forgot, the Lehman signal has a band pass filter on it and 
will have severely attenuated the higher frequency signal from the local 
event.  Silly me!

Ian
http://www.iasmith.com/

ian wrote:
> Hi,
>
> yes, I wouldn't expect my Lehman sensor to pick this up, working in 
> "Lehman" mode but one might expect a signal to be generated by it 
> vibrating in the vertical, just like my geophone.  No doubt it did but 
> the signal didn't rise up out of the noise.  I suppose I should be 
> pleased, otherwise there might be something wrong with its 
> construction or adjustments.
>
> The quake is now listed as 5.2, btw and a teleseismic has just rolled 
> past, apparently from Greece - busy day...
>
> Cheers
>
> Ian
> http://www.iasmith.com/
>
> jonfr@......... wrote:
>> Hi
>>
>> You got a signal that is common for mb4,9 earthquake. I am not surpriced
>> about the lehman, as the event is high frequancy mostly given your
>> distance.
>>
>> Regards.
>> Jón Frímann.
>>
>>  
>>> Hi,
>>>
>>> I've got a huge signal on my geophone.  I'm about 300 miles north of 
>>> the
>>> quake.  The background noise on the trace is the high winds which are
>>> now dying down.  See the bottom graph on http://www.iasmith.com .  My
>>> Lehman (top graph) slept through the event!
>>>
>>> Cheers
>>>
>>> Ian
>>>
>>>
>>> jonfr@......... wrote:
>>>    
>>>> Hi all
>>>>
>>>> According to EMSC there was an mb4.7 earthquake (early size est) in
>>>> England at 00:56. So far no details on the earthquake on BBC News
>>>> webpage.
>>>> But EMSC has info here,
>>>> http://www.emsc-csem.org/index.php?page=current&sub=list
>>>>
>>>> The depth is in early estimates around 96 km. But as this are early
>>>> figures, they can change as more data comes in and they are reviewed.
>>>>
>>>> Regards.
>>>> Jón Frímann.
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