Center for Engineering Strong Motion Data (CESMD)
Update
March 25, 2013
CISN Advisory & Steering Committees
Meeting
CESMD Objectives and Operation
 Established as part of CISN in 2006 as joint effort of US
Geological Survey and California Geological Survey
 Collect, archive, and disseminate records of ground and
structural responses to earthquake strong motions of
engineering interest
 Internet Quick Reports (IQR) of strong motion data within
minutes for rapid response to earthquakes
 Provide information about station, site, geology, etc.
 Provide online search access to CESMD archive principally
for US data; also called Engineering Data Center (EDC)
 Provide integrated search and virtual access to global strongmotion records through the Virtual Data Center (VDC)
March 25, 2013
CISN Advisory & Steering Committees
Meeting
Two Components of CESMD
March 25, 2013
CISN Advisory & Steering Committees
Meeting
Automated Import of Records to IQR
Task:
• Records from CISN and other networks, each
with a variety of instrument types
Provide a coherent presentation of strong motion
records, with Quality Assurance
• Full records, ShakeMap uses peak values
• Automated processing and import of CISN
strong-motion records
March 25, 2013
CISN Advisory & Steering Committees
Meeting
CESMD Internet Quick Report (IQR)
for US Data
• For earthquakes in CISN
region, records are
available via IQR
automatically within
minutes after M>3.5
earthquakes, records w/
PGA>0.5%g
• 78 automatically
generated IQR in 2012
March 25, 2013
CISN Advisory & Steering Committees
Meeting
Small Records Served via FTP
• Small records (M<3.5, and M>3.5
with PGA<0.005g)
FTP(ftp://140.174.65.75/Small_Record_and_Earthquakes)
• Users can access this ftp site
through the link named “Small
Records FTP” in the EDC search
page
• Records from 128 earthquakes in
2012 in FTP
March 25, 2013
CISN Advisory & Steering Committees
Meeting
New Face of the Strong-Motion
Virtual Data Center (VDC)
• VDC has been incorporated into
CESMD (originally developed at
UCSB)
• Metadata upload process now uses
standard format, is more automated
• VDC has been updated with the
addition of M≥5.0 US and New
Zealand records since 2007
• COSMOS promotes international
SM networks making data available
to VDC, development of global
metadata standards
March 25, 2013
CISN Advisory & Steering Committees
Meeting
March 25, 2013
CISN Advisory & Steering Committees
Meeting
Japan K-NET and KiK-net records now in VDC
March 25, 2013
CISN Advisory & Steering Committees
Meeting
VDC Projects in Progress
• Software completed to convert Japanese K-NET and KiK-net
data for uploading record metadata; uploading to VDC now
underway (records from 24 earthquakes already uploaded)
– Criteria: M>5, at least 1 comp > 10%g, depth<100 km
– Only M9 strong motion records that exist
• Collaborating with ITACA (Italian Accelerometric Archive) to
finalize conversion of ITACA records to COSMOS format
• Interacting with other strong-motion networks internationally
to develop protocols for serving their data through the VDC
• Partnering with COSMOS to develop new tools for VDC,
establish standards for data and metadata quality control
March 25, 2013
CISN Advisory & Steering Committees
Meeting
Number of Earthquakes
1000
CESMD Archive
No. of Earthquakes vs Magnitude
100
10
1
0.1
4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0
Magnitude
Records from 296 earthquakes with M=>4.0 in CESMD
March 25, 2013
CISN Advisory & Steering Committees
Meeting
CESMD Archive
No. of Records vs Magnitude
10000
Number of Records
1000
100
10
1
4.0
4.5
5.0
5.5
6.0 6.5 7.0
Magnitude
7.5
8.0
8.5
9.0
About 9270 station records from earthquakes with M=>4.0 in
CESMD
March 25, 2013
CISN Advisory & Steering Committees
Meeting
CESMD Summary
• Provides access to strong-motion data of engineering interest
from CISN, the US and other seismically active countries
• The Strong-Motion Virtual Data Center (VDC) is operational
again; US and New Zealand data for M ≥ 5 since 2007 have
been loaded
• Currently updating VDC to include Japan K-NET and KiK-net
data (close to completion)
• Ground and some structural strong-motion data are processed
and posted from CISN and other networks to aid in response to
earthquakes and to guide future seismic design improvements
March 25, 2013
CISN Advisory & Steering Committees
Meeting