Welcome to the Cascadia 2007 and Beyond Slow Slip and Tremor Website

Motivation and Purpose
Goals
Logistics
Agenda
Presentations
Maps
Draft Paper

Motivation and Purpose:


The primary purpose of this workshop is to promote collaborative synthesis of all the results of the many different studies of slow slip and tremor in Cascadia from January 2007 to the present. This time period presents an opportunity to elucidate these phenomena with unprecedented resolution, as a result of the new wealth of available observations provided by USArray, PBO installations, the growth of permanent monitoring networks, a number of finite-duration field experiments, and the enthusiasm and vigor of groups that have been analyzing and interpreting these data.  The results of these studies are now mature enough to begin exploring how they may fit together.  Such exploration has a high likelihood of revealing new behaviors, relationships among and questions about the phenomena of slow slip and tremor, which in turn can stimulate the planning of future field experiments. In addition, this provides the opportunity to demonstrate publicly, through the production of a high-visibility publication, the tremendous pay-off of investing in new instrumentation, infrastructure and collaborative research.
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Goals:
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Logistics

We met on the UW Campus at the University of Washington Club (faculty club; see http://depts.washington.edu/uwclub/index.htm). For a map of the campus go to http://depts.washington.edu/uwclub/index.htm and find the “UW Club (FAC)”. 

The agenda follows below.  The workshop was informal and highly participatory – a true workshop. 

Contacts: Evelyn (evelynr@usgs.gov) and Joan (gomberg@usgs.gov)
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Agenda

March 2, Day 1
8:00 – 8:15   Introductions [Roeloffs]
8:15 – 10:15 Concise (<10-minute) summary presentations of results and current interpretations; see below for instructions, preliminary list of participants and topics.
10:15 – 10:30 Break
10:30 – 12:30 Concise (<10-minute) summary presentations; see below.
12:30 – 1:30 Lunch
1:30 – 2:00  The global context (presentation/discussion)  [Wang]
2:00 –  3:30 Group discussion of presentations, focusing on the following:  [Brudzinski]
               identification of conflicting observations and inferences,
               what are key inferences, with constraints from multiple studies,
               what outstanding questions can now be answered,
               what new questions emerge.
3:30 – 3:45 Break
3:45 – 5:30 Small group discussions (e.g. huddles around laptops or the backs of envelopes to show details of datasets, work out ideas, etc.).
5:30 -  Dinner

March 3, Day 2
8:00 – 9:00 Synthesis of previous day [Dragert]
9:00 – 10:15 Brainstorming about relationships, models, etc. that tie diverse studies together.  [Trehu]
10:15 – 10:30 Break
10:30 – 11:30 Planning for N. Cascadia 2009 ETS event.    [Creager]
11:30 – 12:15 Planning for other experiments.  [Schmidt]
12:15 – 1:15 Lunch
1:15 – 3:00 Manuscript drafting. [Gomberg, Roeloffs]
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Presentations

Presentations:
Geodetic signature
GPS
T. Melbourne (CWU)
H. Dragert (GSC)
D. Schmidt (U of O)
Strain, tilt
E. Roeloffs (USGS Vancouver)
Gravity
J. Henton(GSC)
InSAR
D. Schmidt (U of O)

Seismic signature
H. Kao (GSC)
K. Creager(UW)
J. Vidale(UW)
A. Trehu (OSU)
M. Brudzinski (Miami U)
J. Rubinstein (USGS Menlo Park)
J. Gomberg(USGS Seattle)
P. Bodin (UW)

Other
E&M
Paul Bedrosian (USGS, Denver)
Gary Egbert (OSU)
Scaling
H. Houston (UW)
The global context
K. Wang (GSC)
Rheologic data and models
S. Peacock (UBC)
P. McCrory (USGS Menlo Park)
M. Bostock (UBC)
Earthquakes
A. Trehu (OSU)

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Maps

Instrumentation Map (everything)
Map of everything
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Instrumentation Map (geodetic only)
geodetic instruments
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Instrumentation Map (seismic only)
seismic instrumentation
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