1. Integrating Geographical Information Systems and Grid Applications
Marlon Pierce
Contributions: Ahmet Sayar, Galip Aydin, Mehmet Aktas, Harshawardhan Gadgil
Community Grids Lab
Indiana University

2. Geographical Information Systems and Grid Applications
Pattern Informatics
Earthquake forecasting code developed by Prof. John Rundle (UC Davis) and collaborators.
Uses seismic archives as input
Regularized Dynamic Annealing Hidden Markov Method (RDAHMM)
Time series analysis code by Dr. Robert Granat (JPL).
Can be applied to GPS and seismic archives.
Can be applied to real-time data.
GeoFEST
Finite element method code developed by Dr. Jay Parker (JPL) and Prof. Greg Lyzenga (JPL/Harvey Mudd College)
Uses fault models as input.
Virtual California
Prof. Rundle’s UC-Davis group
Used for simulating time evolution of fault systems using fault and fault friction models.

3. Pattern Informatics in a Grid Environment
PI in a Grid environment:
Hotspot forecasts are made using publicly available seismic records.
Southern California Earthquake Data Center
Advanced National Seismic System (ANSS) catalogs
Code location is unimportant, can be a service through remote execution
Results need to be stored, shared, modified
Grid/Web Services can provide these capabilities
Problems:
How do we provide programming interfaces (not just user interfaces) to the above catalogs?
How do we connect remote data sources directly to the PI code.
How do we automate this for the entire planet?
Solutions:
Use GIS services to provide the input data, plot the output data
Web Feature Service for data archives
Web Map Service for generating maps
Use HPSearch tool to tie together and manage the distributed data sources and code.

6. Plotting Google satellite maps with QuakeTables fault overlays for Los Angeles.

7. …  Web Map Client WSDL Aggregating WMS Stubs Stubs HTTP SOAP WSDL
“REST”
WFS +
Seismic Rec.
WFS +
State Bounds …
WMS +
OnEarth Or
Google Maps

8. Tying It All Together: HPSearch
HPSearch is an engine for orchestrating distributed Web Service interactions
It uses an event system and supports both file transfers and data streams.
Legacy name
HPSearch flows can be scripted with JavaScript
HPSearch engine binds the flow to a particular set of remote services and executes the script.
HPSearch engines are Web Services, can be distributed interoperate for load balancing.
Boss/Worker model
ProxyWebService: a wrapper class that adds notification and streaming support to a Web Service.
More info:

9. WMS Data Filter HPSearch PI Code Runner HPSearch WFS GML WS Context
Data can be stored and retrieved from the 3rd part repository (Context Service)
WS Context
(Tambora)
WFS
(Gridfarm001)
NaradaBroker network:
Used by HPSearch engines as well as for data transfer
WMS
HPSearch
(TRex)
Data Filter
(Danube)
Virtual Data flow
WMS submits script execution request (URI of script, parameters)
HPSearch hosts an AXIS service for remote deployment of scripts
PI Code Runner
(Danube)
Accumulate Data
Run PI Code
Create Graph
Convert RAW -> GML
HPSearch
(Danube)
GML
(Danube)
Actual Data flow
HPSearch controls the Web services
Final Output pulled by the WMS
HPSearch Engines communicate using NB Messaging infrastructure

10. RDAHMM: GPS Time Series Segmentation Slide Courtesy of Robert Granat, JPL
GPS displacement (3D) length two years. Divided automatically
by HMM into 7 classes.
Features:
Dip due to aquifer drainage (days )
Hector Mine earthquake (day 626)
Noisy period at end of time series
Complex data with subtle signals is difficult for humans to analyze, leading to gaps in analysis
HMM segmentation provides an automatic way to focus attention on the most interesting parts of the time

11. SOPAC GPS Services

13. GIS and Collaboration Tools

14. (Next set shows non-slideshow version)

15. Electric Power and Natural Gas data
Zoom-in
Zoom-out
FeatureInfo mode
Measure distance mode
Clear Distance
Drag and Drop mode
Refresh to initial map

16. Overlaid Outage Area - I
Basic Steps:
Select Energy Power AND Natural Gas Data and Update Layer List rendered on the map
Click on “Overlay Outage” button
See the outage area on the map

17. Overlaid Outage Area - II
Basic Steps:
Select Energy Power Data and Update Layer List rendered on the map
Click on “Overlay Outage” button
Use zoom-in mapping tool below to get same outage area in more detail
See the outage area on the map

18. Getting Info about specific EP Data by clicking on the map
Basic Steps:
Select Energy Power Data and Update Layer List rendered on the map
Select (i) from the mapping tools below.
Click on any feature data on the map.
See the information for selected feature in pop-up window

19. Google Hybrid Map and Feature Information call to WMS
Natural Gas Layer
Electric Power Layer

20. NaradaBrokering: Message Transport for Distributed Services
NB is a distributed messaging software system.
NB system virtualizes transport links between components.
Supports TCP/IP, parallel TCP/IP, UDP, SSL.
See e.g. for trans-Atlantic parallel tcp/ip timings.