CUAHSI Hydrologic Information System

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CUAHSI Hydrologic Information System
Summary as of June 16, 2004 by David R. Maidment
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CUAHSI Hydrologic Information System Participants

• Core Team D. Maidment, J. Helly, P. Kumar, M.
  Piasecki, R. Hooper, J. Duncan
• Collaborators V. Lakshmi, X. Liang, Y. Liang, U.
  Lall, L. Poff, K. Reckhow, D. Tarboton, I.
  Zaslavsky, C. Zheng

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CUAHSI Hydrologic Information System (HIS) Project

• This a 2-year project to develop an RFP for the
  Center for Hydrologic Information (CHI) and
  perform preliminary research and prototyping for
  HIS
• For years 3 and onwards, all funding will be
  competitively awarded by NSF/CUAHSI
• Center for Hydrologic Information
• HydroInformatics Thematic Centers

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Hydrologic Information Science
Hydrologic Information Science is that branch of
hydrologic science that deals with the precise
description of the condition of the earths
waters, and of their surrounding natural
environment. It is concerned with hydrologic
data acquisition, archiving, dissemination,
assembly, analysis and display. The measure of
success of this science is the degree of accuracy
and comprehensiveness of depiction of hydrologic
environments at any location and scale in space
and time.
We should develop and publicize a research
agenda for this science
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CUAHSI HIS is meant to facilitate

• Data Acquisition
• quicker, easier, usable formats
• Data Archiving
• experimental and regional data for HOs
• Data Assembly
• bringing the data together, data model
• Data Analysis
• visualization, statistics, hypothesis testing.

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CUAHSI Hydrologic Information Systems

• Work of the five project partners
• CUAHSI
• San Diego Supercomputer Center
• University of Texas
• University of Illinois
• Drexel University
• Involving the collaborators

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CUAHSI Program Office

• Based in Washington DC
• Executive Director is Rick Hooper
• Communications Director is Jon Duncan
• Jon is the point of contact for the HIS project
• Hydrologic observatory project defines roles for
  HIS
• HO Meeting at Utah State, Logan, on August 24-25
  at which we have to present HIS plan

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CUAHSI Hydrologic Information Systems

• Work of the five project partners
• CUAHSI
• San Diego Supercomputer Center
• University of Texas
• University of Illinois
• Drexel University
• Involving the collaborators

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San Diego Supercomputer Center

• Principal technology partner for HIS
• John Helly is PI, assisted by Don Sutton and
  Tiffany Houghton
• CUAHSI HIS web site (http//cuahsi.sdsc.edu)
• Hydrologic Digital Library for local storage of
  any kind of file
• Metadata definition of file types (.mif)
• HydroViewer for viewing locally published files
• Ilya Zaslavsky deals with internet mapping
• Multiview ArcIMS viewer for viewing locally
  published maps (http//geo.sdsc.edu/website/SIO_Ex
  pl)

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New Concept of Publication
New Way
Old Way
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Arbitrary Digital Objects

• An ADO can be any kind of file
• Described by metadata in .mif format
• Stored in a local digital library
• Accessed using HydroViewer
• Federated network of libraries across country

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System Architecture Interfaces
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HydroViewer GUI
Neuse River Watershed Collection
HydroViewer Demo by John Helly
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CUAHSI Hydrologic Information Systems

• Work of the five project partners
• CUAHSI
• San Diego Supercomputer Center
• University of Texas
• University of Illinois
• Drexel University
• Involving the collaborators

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University of Texas

• David Maidment is PI, assisted by Jon Goodall,
  Gil Strassberg, Venkatesh Merwade
• Hydrologic data model development
• atmospheric water, surface water, subsurface
  water
• interoperable analysis environment

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CUAHSI Hydrologic Information System
Experiments
Monitoring
1. Assemble data from many sources
Information Sources
GIS
Remote sensing
Climate models
2. Integrate data into a coherent structure
Hydrologic Information Data Model
Hypothesis testing
Analysis and Visualization
3. Do science
Statistics
Data Assimilation
Simulation
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Digital WatershedAn implementation of the
CUAHSI Hydrologic Information Data Model for a
particular region
Created first for the Neuse basin and then for
each of the following CUAHSI Observatory
Planning basins
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http//neuse.crwr.utexas.edu/
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Neuse Basin Coastal aquifer system
Section line
Beaufort Aquifer
From USGS, Water Resources Data Report of North
Carolina for WY 2002
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A 3-D Volume Model of the Beaufort Aquifer
Beaufort confining layer
Beaufort aquifer
Built by Gil Strassberg from borehole information
collected by the Neuse basin case study team
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RUC20 Output Samples
Precipitable water in the atmosphere
Cross-section of relative humidity
Wind vectors and wind speed (shading)
Images created from Unidatas Integrated Data
Viewer (IDV)
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Surface Water Information
ArcIMS Web Server displaying data compiled in
Neuse HO Planning Study
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SDSC Multiview Map Viewer
http//geo.sdsc.edu/website/SIO_Expl/viewer.htm
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Neuse basin data in Multiview
http//geo.sdsc.edu/website/SIO_Expl/viewer.htm
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Adding more ArcIMS map services
ArcIMS Website http//emrcims.uwrl.usu.edu uses
data stored in an ArcGIS geodatabase
From Utah State University
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University of Illinois

• Praveen Kumar is PI, assisted by Benjamin Ruddell
• Developing Modelshed which is an generalized
  hydrologic modeling and data analysis environment
  built on top of Arc Hydro
• Focused on applications integrating hydrology and
  climate modeling

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Arc Hydro Components
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What is a Modelshed?

• A volumetric spatial model unit, registered in
  three dimensions by a GIS, with which
  time-varying data, model fluxes, spatial
  relationships and descriptive metadata are
  associated

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AreaLink

• The AreaLink connects otherwise unrelated spatial
  coverages and zones, to allow interaction

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OrthogonalLink

• Curvilinear ModelshedTypes may establish
  orthogonal links to neighboring X and Y Modelsheds

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Applications Helping Raster Vector Talk
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In this example, we are using a 30km climate
simulation grid to simulate moisture fluxes. We
want to study fluxes in grid zones dominated by
forests, with elevations greater than 500ft.
Datasets used grid polygon layer, DEM, USGS
land cover, climate simulation output data
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Drexel University

• Michael Piasecki is PI, assisted by Luis Bermudez
• Goal is to study metadata languages and standards
  to find what is most suitable for hydrology
• Concept hierarchies stored in ontologies
  described in OWL (Ontology Web Language)

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ESML Earth Science Markup Language
Syntactic Metadata

• From the Information Technology Systems Center
  of the University of Alabama
• Defines documents in XML to describe any format
  file with the required elements for a computer
  program to interpret the data

Example of an ESML file describe the file
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Methodology
Model Ontology
Define concepts
Hydrologic domain
Available Models e.g. Arc Hydro

• Classes
• Properties
• Facets
• Relations

Metadata e.g. ISO

• XML schemas
• Extended elements
• New elements

• Create XML Schemas
• Match elements
• Select best encoding

Markup Languages e.g. GML, ESML
Cataloging activities e.g. GCMD
Create tools to facilitate its use e.g. editor,
searcher
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2. Definition of concepts Cross Section is
composed of two or more points
Thalweg
BankLines
1. Domain Natural Channels
Floodlines
CrossSection

• 3. Definition of
• classes
• Properties
• facets
• relations

4. Match elements ISO /DIS 19115 2001
MD_GeometricObjectTypeCode point
Channel Feature
5. Create XML Schema
Reach Code River Code
lt?xml version"1.0"?gt ltxsdschema xmlnsxsd
hydroml http//www.hydroml.org iso
http//iso.com/schema lt xsdelement
namecrossSection gt ltxsdcomplexTypegt
ltxsdsequencegt ltxsdelement
refhydromlpoint" minOccurs2maxOccurs"unbo
unded/gt ltxsdrestriction base"xsddouble/gt lt
xsdelement namepoint type isopointgt
CrossSection Point
2 ..
Cross Section
CrossM Elevation
double
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Hydrologic Information System Data Organization
Application Systems
Process model domains
Flux Assessment System
Hydrologic Digital Library (Digital files of
hydrologic information in any form, indexed by a
metadata catalog)
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Involving the Collaborators..

• We have a good start
• How do we involve the collaborators in a
  productive way?
• How should we interact with the Hydrologic
  Observatory proposers (meeting at Utah State on
  August 24-25)?
• Possible CUAHSI all hands meeting at SDSC on
  August 12-13