Quanterra Users Group (QUG) meeting
Geophysical Institute, Prague, Czech Republic. November 12 - 13, 1998
Damiano Pesaresi1, 2
1 ING, Via di Vigna Murata 605, Roma, Italy
2 CTBTO / IMS Division / Seismic Section, PO Box 1200, A-1400 Vienna, Austria
There are a lot of Quanterra seismic digital acquisition units used all
around the world. From the members of the
Federation of Digital Broad-Band Seismograph Networks (FDSN)
the China Digital Seismographic Network, the Czech Republic,
Common systems have common problems, so in the past it has been felt
the need to have a common way to solve such a kind of problems and/or
to address future developments and needs.
A few people decided finally to meet and start what become afterwards
the Quanterra Users Group (QUG). They were initially Joe Steim from
Quanterra, Sue McLafferty, Caryl Peterson and Bob Hutt from
Albuquerque Seismological Laboratory
Doug Neuhauser from
U.C. Berkeley ,
Phil Maechling from
and Tim Ahern from IRIS DMC in Seattle,
Washington. After the first one, the QUG meetings have been scheduled once a year,
every institution organizing in turn:
- 1993 Quanterra
- 1994 IRIS DMC, Seattle, WA, USA
- 1995 ASL, Albuquerque, NM, USA
- 1996 Caltech, Los Angeles, CA, USA
- 1997 ASL, Albuquerque, NM, USA
- 1998 Geophysical Institute, Prague, Czech Republic
With time, the Group got bigger and bigger, involving institutions from all over
the world (Japan, Mexico, etc.). It has also established the QUG official
FTP site at Berkeley.
Last meeting was a special one, because it was the first time that such a kind of
meeting was held outside the US. As the organizer, I can tell it was difficult to
convince people from the US to travel overseas! But, of course, this has been on
occasion to gather people not only from the US, but also from Europe. Let me quote
from Joe Steim
The major point of the QUG, in my opinion, is to share
information among users and Quanterra with the purpose of operating networks
and stations optimally. This implies a flow of information both to and from Quanterra
on what's needed from the data gathering organizations' perspectives. We also try
to explain what we've implemented to try to achieve these goals. By not spreading
our support effort too thinly, and searching for common ground among everyone's
desires (inasmuch as that's possible) we all end up with a better product to make
and use. I firmly believe that the needs of most organizations are not as divergent
as it might appear.
The first 4 or 5 meetings have been in the US, and for each, European users
have been in some cases able to attend, but it has been difficult for some.
Although our business is dominated by US organizations, there are certainly
a number of groups in Europe for whom the goals above are also true. Italy,
Germany, France, Austria, Czech Rep., Spain, to name a few. It seemed like
a positive suggestion to have at least one QUG meeting to incorporate these
folks' ideas and benefit from their participation. We all benefit from good
ideas that may be broadly applicable. Bear in mind that the current generation
of equipment populating the GSN is the fruit of a Czech idea, developed by US,
Swiss, and German scientists, with Italian support! Broad participation in the
QUG, wherever it may be, is squarely in the best interest of IRIS and all groups
using our equipment.
Agenda / Major items
A more detailed version of the items discussed is available on request.
Day 1 - Thursday November 12, 1998
- Introduction 8:30-8:45
A "Welcome to Prague" speech was given by Jan Zednik, the representative from
the Institute where the meeting was held. Damiano Pesaresi presented the agenda
and coordinated the meeting.
- Presentation of Quanterra's Products by Joe Steim 8:45-10:15AM
Currently in Production: Q680, Q4120, Q730
PCDSRW - Simple Personal Data Acquisition and Terminal Emulation Package.
Comserv - Open standards client-server suite for real-time acquisition
of seismological data which was developed in collaboration with network
operators. It is public domain code maintained by Quanterra.
- IP protocol in Quanterra Systems: Present and Future.
- Comserv-Linux demonstration by Winfried Hanka - 10:15-11:00
- Communications Technology
A. Nanometrics Libra System - Neil Spriggs 11:00-11:50
B. Kinemetrics VSAT - KMI VSAT: John Fort 11:50AM-12:00
C. Integration with Quanterra Systems - Joe Steim 12:00-12:30PM
D. Spread Spectrum Radios - Bob Busby - 12:30 - 1:00PPM
Freewave spread spectrum radios used at Cal Tech
- New Systems and Software/State of the Art: - Joe Steim, Danny Harvey, John Fort - 3PM-4:15PM
A. IMS stations - Bob Hutt - 4:30PM- 4:45PM
Auxiliary IMS stations contribute data to help define an event
Most Auxiliary stations are single stations rather than arrays
Authentication of data
B. CTBTO - Rod Stewart 5PM-6:20PM
Maps of Stations, count of stations were presented
C. Data Authentication - Pres Herrington 6:20- 7:00PM
D. Discussion of Scientific Networks and the IMS - Rhett Butler 7:00PM - 7:30PM
GSN welcomes the use of its stations by the IMS because dual use can benefit both parties.
However, there are concerns:
- IMS requirements and Operations Manual (Draft)
- Dynamic Range
- Operational paperwork
- GCI Interface
- Future upgrades
- Network Stabilization
Day 2 - Friday November 13, 1998
- 8. Y2K - Millennial Woes, GPS Epoch, and FIR Filter Delays- Joe Steim 8:30AM-9:30AM
MultiShear, FIR Filter Delays
- Geodetic GPS data Acquisition under MultiShear - Doug Neuhauser 9:30-10:30AM
- MultiShear configuration workshop - "keys", "keymacros" - Bob Busby 11:00-1:PM
Key system file structure
Types of Q680 Systems:
* LV - Internal GSP clock and 4 serial ports
* DV - External GPS clock and 8 serial ports
* LT - 68000 systems
* LX - 68000 systems
MultiShear Status Screen comments
- Potential Problems and Real Problems with seismic systems - Joe Steim 3PM-4:30
- Remote Update Procedure - Bob Busby
- Network Operator Updates
Geofon (Winfried Hanka), - about 30 stations world wide
Austria (Peter Melichar) - Oldest Quanterra telemetered network.
He has hardware solutions to severe lightning problems.
He uses a cascaded lightning protection system.
Next QUG meeting
Next QUG meeting will be hosted by Berkeley (Doug Neuhauser), possibly after the AGU meeting.