[Shake-dev] Integration of accelerometer data to shakemap

[David Wald]

Dear Phuntsho,

 

Thanks for your note. 

 

I attempt to answer your questions below, but feel free to contact me directly for any others. 

 

NOTE: For anyone else working with ShakeMap in Asia (e.g., ASEAN/APEC countries), we hope to hold a workshop associated with the upcoming Understanding Risk Forum (UR2020) to be held in Singapore, May 18-22, 2020. That is pending approval from the organizers. The workshop will be “ShakeMap‐Related Research, Development, Operations, and Applications”. We will notify the shake-dev list-server when we know more. 

 

@Phuntsho: This workshop would be beneficial for you and we’d be glad to have you attend. We hope to be able to offer travel support pending approval. 

 

Regards,

 

David

-- 

David Wald, Ph.D.

U.S. Geological Survey, Golden, CO

wald at usgs.gov, (303) 273 8441

 

 

From: Shake-dev <shake-dev-bounces at geohazards.usgs.gov> on behalf of Phuntsho Pelgay <ppelgay at moea.gov.bt>

Date: Saturday, October 19, 2019 at 12:00 AM

To: <shake-dev at geohazards.usgs.gov>

Subject: [Shake-dev] Integration of accelerometer data to shakemap

 

Dear shakemap

I have following questions regarding shakemap as I am new to it:

1. I have been trying to use our own accelerometer meter data ( aka intensity meter ), which gives PGA, PGV and MMI,  in shakemap. However, I am not quite sure how shakemap modules consider these data for calculation. I have read technical guide for version 3.5 about macro seismic data. There it says measured intensity data are weighted low for calculation of shakemap. I have tried to convert our own intensity data to shakemap readable xml and run the model. And I have played around the pga and MMI values in that xml and run the shakemap module for the same event id to see the changes in the outputs. But, I saw no changes in the outputs. So my question is, how do we configure shakemap so that it uses only local strong motion data to generate shakemap. Our objective is to monitor earthquake intensity locally, and we have dense enough strong motion stations.

 

Depending on where you are in your efforts, you might (should?) consider upgrading to ShakeMap V4. We can be of much more help on the latest system. That said, you don’t need to put MMI values into the instrumental data files that are used at ShakeMap input. Those values are computed separately within ShakeMap. If do you have actual MMI data (assigned intensities), they go in a separate input file (e.g., [macroseismic]_dat.xml), and those “stations” should show up separately from the stations on your maps if the data are properly formatted. You can run ShakeMap with stations only, simply by not having any [macroseismic]_dat.xml files in the input directory.

 

2. We are using seiscomp to generate shakemap event file. How do we link shakemap to shakecast, so that latter automatically uses shakemap products? I am sorry if this question is irrelevant here.

You’ll have to be indicate what versions of ShakeMap/ShakeCast you are using. Preferably, you’ll upgrade to V4 ShakeMap and ShakeCast since we favor supporting the later versions of the software. In general, ShakeCast retrieves data from USGS feeds, but one can simply configure ShakeCast to point to your local directories (with products put there directly by a co-hosted ShakeMap instance). You’ll need to make the event downloads directory available to ShakeCast, but the details of this depend on the versions in use. Kuo-wan Lin will see such queries to shakecast-help at usgs.gov and will be glad to help you.

 

Thank you in advance 

-- 

null

 

 

 

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