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Workshop Description
Download
the Agenda (Word Document)
The Plate Boundary Observatory (PBO) is
a proposed facility for investigating active tectonic, seismic,
and magmatic processes of the Pacific/Juan de Fuca - North American
plate boundary zone through measurements of crustal deformation.
The study of plate boundary deformation is a research area that
deserves increased attention from a broad spectrum of Earth scientists.
The chief observational requirement is a characterization of
the three-dimensional deformation field over the maximum ranges
of spatial and temporal scales. The PBO will be designed to study
long-term, regional tectonic processes as well as shorter-term,
smaller-scale processes that may be more closely related to natural
hazards, such as earthquakes and volcanic eruptions. The basic
structure of the PBO was formulated in the first PBO workshop
(October 1999) and is described in the PBO
White Paper. The PBO will consist of a backbone network of
continuous GPS receivers covering the entire plate boundary region
and dense clusters of continuous GPS receivers and strainmeters.
These clusters will include the San Andreas fault system, at
least 6 volcanic centers, as well as additional clusters in other
important tectonic regions within the plate boundary zone.
The PBO Steering Committee (see membership
below) invites participation from a broad spectrum of Earth scientists
in a workshop to select these additional instrument clusters
and thus fully define the PBO. The workshop will produce a report
describing the instrument configuration, as well as the PBO implementation
and siting plan for those parts of PBO that were already well-defined
after the first workshop. This workshop has three main goals:
* To better define the interdisciplinary
science that can be done by combining geodetic measurements with
other paleoseismological and volcanological investigations.
* To select the remaining PBO instrument
clusters, both for tectonic and volcanic systems.
* To develop a siting plan for the PBO
backbone and the San Andreas fault system instrument cluster.
The workshop will be limited to 100 participants.
Applicants to the workshop are asked to provide a brief statement
of interests including how the applicant can contribute to the
goals of the workshop. (use form
below) For those who would like to propose a cluster deployment
in a particular region, we will request a short formal proposal
to be submitted two weeks prior to the workshop. The proposal
details will be described in the second announcement. Partial
support (air travel, hotel, meals) will be provided by workshop
funds.
The application deadline is September 1,
2000.
Invitations will be mailed to participants
by September 15, 2000.
Additional information on the PBO can also
be found at the above web address.
Sponsored by the NSF
Division of Earth Sciences, UNAVCO,
NASA, USGS,
IGPP, and SCEC.
Workshop Organizing Committee: Jeff Freymueller
(Chair), Duncan Agnew, Jonathon Fink, Meghan Miller, David Schwartz,
Paul Silver, and Tonie Van Dam
PBO Steering Committee: Paul Silver (Chair),
Yehuda Bock, Andrea Donnellan, Jeff Freymueller,
Don Helmberger, Tom Henyey, Ken Hudnut, Gene Humphreys, Chris
Marone, Meghan
Miller, Bernard Minster, Barbara Romanowicz, Paul Segall, Bob
Smith, Seth Stein, Wayne Thatcher, George Thompson, Tonie Van
Dam, Frank Webb, Brian Wernicke, John McRaney (Secretary).
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Call for Mini-Proposals
San
Andreas Fault Proposal (PDF)
Mini-proposals
for review
As part of the Second Plate Boundary Observatory
(PBO) Workshop, the PBO Steering Committee invites submission
of miniproposals. As described in the PBO White paper, the PBO
is planned to consist of:
I. A "backbone" network of approximately 100 continuous
GPS receivers which will cover the entire plate boundary region
at a spacing of 100-200 km.
II. A denser deployment of approximately 400 GPS receivers and
175 strainmeters along the San Andreas Fault system.
III. Approximately 100 GPS receivers and 25 strainmeters focused
on volcanic centers. Yellowstone and Long Valley will be two
of these centers. The remaining resources may be focused on four
specific volcanic centers or distributed more broadly to cover
more potentially active centers with some equipment held in reserve
for deployment at volcanoes that show signs of activity, or some
combination of these strategies.
IV. Dense clusters of continuous GPS receivers and strainmeters
off the San Andreas fault system. Current plans are for approximately
275 GPS receivers, or an equivalent mix of GPS and strainmeters,
to be allocated to these clusters, which would include important
tectonic regions or other volcanic centers within the plate boundary
zone.
Miniproposals are invited for specific
deployments as part of elements III or IV, or especially concentrated
deployments as part of element II. Such proposals should include:
a. Background on the tectonic (and if appropriate eruptive) history
of the region, and on what is known about its current deformation.
Also, what other kinds of monitoring (eg seismicity) are currently
available.
b. What outstanding problems can be addressed by intensive deformation
measurements in the region--especially any temporal fluctuations
that might reasonably be expected. Proposals which can address
time variations in deformation are likely to be more highly rated.
These variations may be ones during the operation of the PBO
(for example, post-seismic deformation), or ones found through
comparison of geodetic (decadal) with geologic rates of deformation.
c. What deployment of instruments is adequate to address the
issues discussed in (b). Proposals which can make a clear argument
for the number of instruments proposed are likely to be more
highly rated.
In addition, proposals may discuss strategies
for instrument deployment in elements I and II, in terms of addressing
different problems.
In order to provide for a more focused
discussion at the workshop, two internal groups will be asked
to prepare "strawman" plans for elements II and III
prior to the workshop. These plans will be reviewed along with
the miniproposals for these elements, and a final plan will be
produced based on both.
The review of miniproposals and of strawman
plans will be done by two panels, one for element II and one
for elements III and IV. The panels will judge all the proposals
on general scientific merit, with weight being given to the aspects
described above. The evaluation procedure will focus on processes
and problems to be elucidated, not on specific areas; such a
focus should thus be the aim of those submitting miniproposals.
Miniproposals shall not exceed 5 pages,
nor have text in less than 12-point type. All proposals must
be submitted electronically as .pdf files (to the same standards
as the NSF Fastlane system). The deadline for miniproposal submission
is October 15, 2000.
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