Synapse - MOSCOW

INTAS-IA-96-03 - Moscow, July'98 -

Synapse Science Center (SSC): D.G.S. package DEMO

[ Ostojenka St., 13/12, bld 1-AB, 119034 Moscow; Tel.: (+7 095) 201 25 16, Fax: 956 30 33; E-mail: xlm@synapse.ru ]
( click on the images for a larger view )

After an introduction of the SSC Director (Dr. M. Rozhkov), Dr. Leonid Haikin shows to all the Intas participants the main capabilities of their product DGS, the automated digitizing system for seismological paper records processing. A program overview (fast version, only text manual, version I-'95) is described here. The modular design of the product helps the user during all the procedure, moving between the various operating windows (Main,Etc, Eraser, Save-line, Rotate, Arc) and program manipulation environments, such as:

Digitization	Time binding and setting variable time scale	Rotation of the image	Transforming to rectangular coordinates
Erasing the dirt spots	Enhancing	Dispiking	Filtering
Measuring	Automatic cleaning the tracks of digitized traces	Tuning the selection parameters	Converting CSS 2.8 to SEG-Y format

Dr. A.F.Kushnir (Russian Academy of Sciences) shows another important Synapse product: the SNDA library. Then a successfull recent application was presented: the detection and parameter estimation of an explosion hidden in the coda of a strong earthquake(*)
(*) Combined automated and off-line computer processing system for seismic monitoring with Small Aperture Arrays, in: Seismological Research Letter, 69-3, V/VI'98

After a full-day of demonstrations at SSC Centre, in Moscow, and other several useful discussions, finally the NIS partners (both Mr Yurov and Mr Geyko) agree to go deeper with Synapse people into the possibility to purchase the DGS package for their needs. Then at new Spets. Lab. the first raw data acquisition and processing was done, using a demo-version of DGS. Of course, the new package has to be well learned; so, after the signature of their own contract with SSC, Spetsgeofizika will obtain a full assistance on the product, including a training Course. For the other final software to process the DGS output-data (SEG-Y format) all Participants agree to look for a freeware product (e.g. SAC-2000 by Lawrence Livermor National Laboratory LLNL). Furthermore, Mr Yurov will contact also other Russian Colleagues, who already are using the same DGS product in seismic processing: they are the SevMorGeo State Enterprise (Artic and Barents Sea Research Inst., St. Petersburg) and UIPE (United Institute of Physics of the Earth, Moscow).

Before digitizing the traces, the User must use the available tools for enhancing the lines, and make his best to make the single seismograms readable by the software. Working on very bad examples (as that on picture), after many hours of manual corrections, we concluded that in these cases the best solution is to go back to the original (paper) copies, and work on them (by pencil...). Neverthless, we should remember that we were at a very first software knowledge, and that other Customers did solve their jobs with similar data-quality.

But, fortunately, other tools can help us! So, to let the computers to rest a little, we turned towards a ....mental processig! What better than a chess-game?