Seis Com P 3 Software for seismological analysis

Seis. Com. P 3 Software for seismological analysis in real-time • GFZ (GEOFON; Potsdam) Winfried Hanka, Joachim Saul, Andres Heinloo, . . . • GEMPA (Potsdam) Bernd Weber, Jan Becker, . . . Software package for seismological data acquisition, quality control, archiving and automated/manual analysis in real-time Seis. Com. P 3 originally developed within the GITEWS project (NOT available for MS Windows)

Seis. Com. P 3 Software for seismological analysis in real-time • Originally designed as acquisition and archiving software for GEOFON • Seed. Link as core protocol became a de-facto standard in Europe since 2001 • Since 2003 development of simple automatic analysis tools • Since 2005 with global associator/locator, interactive analysis (SH, Seis. Com. P 2) • Arc. Link for distributed archives (waveforms and meta data) • Mid of 2006 start of Seis. Com. P 3 core (communication, database) - TWS • Seis. Com. P 3 GUI development starting in end of 2006 • Installation at BMG (Indonesia) in May 2007

Seis. Com. P 3 Software for seismological analysis in real-time • Software package for seismological data acquisition, quality control, archiving and automated/manual analysis in real time • Inter-process communication between modules using TCP-based messaging to allow distributed processing; Communications managed by central mediator • Uses/supports standards: SEED, Seed. Link, Quake. ML data model used for storage and communication • GUI‘s for quick manual interaction/review, waveform visualization, event visualization and state-of-health monitoring • Framework for seismological software development

Seis. Com. P 3 Features • Automatic P picker (STA/LTA; AR-AIC in progress) • Automatic global phase associator/locator (Loc. SAT) • Magnitudes implemented: ML, MJ, mb, m. B, Mw(m. B), Mwp, Mw(Mwp) Slower magnitudes have no high priority, but will be implemented (e. g. Ms) • Manual interaction where necessary; relocator choice (Loc. SAT, Non. Lin. Loc) • Remote processing/review • Seis. Com. P 3 uses (broadband!) m. B as default magnitude for large earthquakes • Written in C++ with most functionality available as library functions • Database support as module (My. SQL, SQLite, Postgre. SQL) • Scripting interface for the Python language

Seis. Com. P 3 Recent achievements • • • Station inventory improved schema Use of full instrument response (e. g. MT, strong motion data) Abstract locator interface to allow use of not just Loc. Sat Non. Lin. Loc fully integrated as relocator option (ETH funded) Choice in scolv of locator and traveltime tables scolv offline mode to work with mseed files some new magnitudes incl. broaband Ms automated moment tensor (Hamburg Univ. ). . .

Originally developed for teleseismic (tsunamigenic) earthquakes – flexibility for monitoring local earthquakes

Upcoming Features • Multiband picker • Different velocity models • Quake. Link (based on jabber protocol) • Support of Mac. OS • Other fast magnitudes available (Mwp) or planned (Mwpd, m. Bc, . . . ) • Oracle support planned

QC-Tool: Determining waveform quality like • Timing quality • RMS • Offset • Gaps • … Amp. Tool: Calculating amplitudes for • MLv • mb • m. B • … Auto. Pick: Detection of seismic signals WF AT Waveform. Server: Providing real time data by seedlink and archive data by arclink Event. Tool: Associating origins to events (earthquake folder) Choosing best location and magnitude, SC 3 Server AP Master with DB-plugin AL MT QC DB ET Mag. Tool: Calculating magnitudes • MLv • mb • m. B • … Master: Central element of the messaging system, which is handling the meta data exchange between SC 3 modules • based on spread (open source messaging toolkit) • TCP/IP • writes objects to SQL DB (My. SQL, POSTGRESQL) Auto. Loc: Automatic localization of earthquakes

Seis. Com. P 3 Processing Modules Seed. Link – Real time data acquisition slarchive – Storing waveform data in SDS structure Arc. Link – Retrieval of waveform data from archive scmaster – central modul of messaging system scqc – determination of Quality Parameters of WF scautopick – Automatic picking scautoloc – Automatic localization scamp – Amplitude determination scmag – Magnitude calculation scevent – Compilation of earthquake parameters

Seis. Com. P 3 Graphical user interfaces scrttv – Showing actual waveforms of the stations scmv – showing the overall situation scesv – Summary of the Event scolv – Revision of processing results including manual picking scqcv – Showing the Waveform quality parameters

Seis. Com. P 3 Utilities scart – copying waveforms from archive to archive or file scbulletin – writing event information into a bulletin file scmm – Performance monitor (GUI) scdb – writing Quake. ML files to DB scevtlog – Loggin of all event updates scevtls – providing event IDs within a timespan

Simplified automatic processing Auto. Pick Auto. Loc P Pick 7 6 5 4 3 2 1 Event. Tool Origin 1 O Magnitude 7 6 5 4 3 2 1 O Mag. Tool A Waiting until time windows of 30 s for mb amplitude calculations are filled. Origin 1 Amplitude 7 6 5 4 3 2 1 M GUI E Event 1 Time Location Magnitude

GUIs - scmv - Station with actual ground motion Ground motion legend Triggering station (blinking)

GUIs - scmv - P-wave Associated stations Epicenter Size=Magnitude Color=Depth S-Wave

GUIs - scrttv - Pick Time Trace information

GUIs - scrttv - Picks Trace sorted by Distance Origin arrived

GUIs - scesv - Time information Epicenter Magnitude information Location information

GUIs - scolv Summary Epicenter plus Stations Origin information Residuals Arrival table X=Distance Merge manual. Y=Time Open and automatic Relocate Commit Origin Manual. Picker to system solution Fix Depth

GUIs - scolv - X=Azimuth Y=Residual

GUIs - scolv - Polarplot

GUIs - scolv Magnitudes Magnitude residuals Stationmagnitude table

GUIs - scolv - Choose Align traces by Picking mode Filter Relocate component phase or time (P/S) (defined) (Z/N/E) Manual pick (green) Zoom trace Automatic picks All traces (red) Theoretical arrivals (blue) Time Trace information

http: //www. seiscomp 3. org/wiki/license

Future of Seis. Com. P 3 • GITEWS project, by which the development of SC 3 was financed, ended in March 2010 • Gempa is a spin-off from GFZ and is providing long term support for SC 3 • Business model is based on: –Support & Maintainance –Training –Software development