ESRI Marine Special
Interest Group Meeting (Marine Data Model)
ESRI International User
Conference
Tuesday, July 9th, 5:30
p.m., Marina E (Marriott), San Diego, CA
Approximately 65 in
attendance first half of meeting, 44 second half
Introduction (Joe Breman,
ESRI)
- welcome and introduction of special interest group (SIG), brief history of group, having started last year with 40-50 members and now has grown to 1500
-
Wave newsletter
-
Background on ArcGIS
Marine Data Model
-
Overview of capabilities
in ArcGIS 8.2 for marine applications
ArcScene 8.2 Demo with data
from N. Israeli coast
-
base heights can
adjust to see effects on coastline (offset of sea surface) high and low tide
-
animation of high and
low tide (adjusting for base heights of surface layer)
-
fly-through INTO water
column, looking back up to surface from within the water column
-
tracking of boat or
mammals underwater, tracking within the water column
-
flip surface around
-
also Monterey Canyon
land terrain, sea surface, AND seafloor
Announcement of field trip to
Scripps Institution of Oceanography, including their new Visualization
Center, and San Diego
Supercomputer Center
Introducing the ArcGIS
Marine Data Model (Dawn Wright, Oregon State)
Complete PowerPoint file on
web at http://dusk.geo.orst.edu/djl/arcgis/docs/DMintro_ESRI.ppt
Marine GIS Data Model: Example Data Problems for Marine Analysis (Pat Halpin, Duke)
Related PowerPoint file on
web at
http://dusk.geo.orst.edu/djl/arcgis/docs/halpin_files/v3_document.htm
- ways to deal with a 2.5 D
in a better way
- generic approach to
simplify the problem presentation of fundamental marine data types
- exploit functionality of
ArcGIS
- Pink conceptual feature
class diagram of marine data types think of these as traditional ESRI feature
classes
- Gulf of Maine data-rich
area, different kinds of data
Various data types:
-
Instantaneous points
snapshot attributes are only good for that snapshot in time, must have the
t-field, mammal sighting for example
-
Time duration points
fixed in space, recording continuously over time, such as a recording buoy, needs a time on/time off
attribute
-
Time series points
fixed points, tracked as a time series, xyzt, and each feature (such an animal)
in its own series
-
Vector (e.g., shoreline)
-
Time duration vector
(lines have start and stop, such as a trawl 1 attribute attached to each
vector)
-
Time duration vector with
effort track of cruise, start and
stop, maybe during different sections of a cruise
-
Area (e.g., marine
boundary)
-
Region collections of
areas (polys)
-
Time duration area
areas persist temporarily, fixed location ³winks² on and off, such as areas
where fishing is allowed or not allowed during the year
-
Raster
-
Raster time series
where you store the raw data but calculate things on the fly from the data
(e.g., gradients that are fronts and then the distance to those fronts)
Generic model to start off
with? Discussion questions
3-D Demos to Show Further Possibilities in Marine GIS (Tiffany Vance, NOAA Alaska Fisheries Science Center and Oregon State)
VRML (EVS and ArcView) - are
these good representations of the kinds of things that people would like to do
in AV? - don't want to leave anything out in creating the data model
Analysis rather than just display
Demo 1 - CTD and cast data,
boreholes, atmospheric soundings, well logs
Cordell Bank - biogeographic
visualization - 3D Analyst to VRML - kind of thing we'd want to be able to do
in ArcGIS - bathy, surface, and vertical line to represent CTD cast
Demo 2 - salinity from same CTDs shown earlier - diagram created with EVS - CTD solids based on water temperature - EVS creates a 3D grid so that you can put an arbitrary slice through data - then take track of marine mammal through volume and analyze what temperate animal encountered analyze why animal went where it did, trying to seek or avoid what it encountered
Questions/Comments (Responses)
Have we involved the
International Maritime Organization in the model effort? - They don't do much
with GIS but currently manage the world's maritime boundaries and ships -
current recognition and use - ties to United Nations - good
suggestion that we need to look in to. Closest tie that we probably have is
with researchers from Veridian, who distribute and maintain a global maritime
boundaries database and who are on the model review team.
Where is metadata in the data
model? - handled already in generic geodatabase
structure (metadata is part of the geodatabase) so we can focus more on the
data collection and 3D limitations.
We need to involve submarine
cable and military users in the model development good
suggestion that we need to look into. We have a couple of NAVOCEANO and NAVFAC
personnel on the review team and many other NAVOCEANO people have expressed
interest over the web. At the end of the month, Dawn Wright will be presenting
a special seminar to the Fleet Numerical Meteorology and Oceanography Center in
Monterey, CA, which will include some info on the marine data model project.
Dawn has also contacted Thales-Geosolutions and SAIC (submarine telecommunications division) to try to get the submarine cable
community involved. She also referred them to the new pipeline data model
project.
Parting Comments
Future of geodatabase is
bright - new gdb design with topology rules should further encourage us marine
types to "get our feet wet" (pun intended) in the geodatabase
ESRI is a business partner
with EVS - 2 extensions - EVS for ArcGIS, www.ctech.com - good examples with
NOAA data - they have kriging, octant search for analysis, not just
visualization for eye candy - extension is not as fully blown as other
scientific visualization software but does provide very useful features such as
temperature fence diagrams and other work with CTD data
3D visualization/animation
vs. nitty-gritty analytical tasks - ESRI needs to see examples of the latter -
instead of ESRI having to reinvent the wheel, one answer may be for them to
become a business partner with some of these other companies
Adjourn: 7:10 p.m.