1 / 9

Barbara Tewksbury Hamilton College

Microplates in the SW Pacific analyzing geophysical, DEM, and bathyDEM data sets and creating a topologically valid plate boundary map for the Woodlark Basin region. Barbara Tewksbury Hamilton College. Context. Semester course GIS for Geoscientists About midway through the course

rcronin
Télécharger la présentation

Barbara Tewksbury Hamilton College

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Microplates in the SW Pacificanalyzing geophysical, DEM, and bathyDEM data sets and creating a topologically valid plate boundary map for the Woodlark Basin region Barbara Tewksbury Hamilton College

  2. Context Semester course GIS for Geoscientists About midway through the course Assumes following knowledge/skill Distinguishing characteristics of plate boundaries Coordinate systems/projections Manipulating layers Hillshading Working with rasters and shapefiles Map layout/cartography

  3. Purpose: geological • Analyze plates and plate boundaries in Woodlark Basin Region http://denali.gsfc.nasa.gov/dtam/gtam/

  4. Purposes: GIS • Use multiple data sets • Calculate and use Z factor • Add XYZ data from spreadsheet and portray in ArcScene • Georeferencing • Create a geodatabase and make a topologically valid geologic map • Create a beeyootiful and cartographically correct map • Poster with map plus evidence

  5. Multiple data sets • Students download from original data sources and prep for hw • NOAA etopo1 bathy/topo DEM • SRTM DEM • EQ data from USGS EQ Hazards Prog. • Volcanoes from Smithsonian Global Volcanism Project • World continents shapefile • Other data sets (from course server) • Higher res bathyDEM of Woodlark Basin • Jpegs with ocean floor ages and plate motion vectors (to be georeferenced)

  6. Phase 1: preparation of a base map and ArcScene visualization • Combination of three DEMs to give regional coverage, detail, and land/ocean distinction

  7. Phase 2: analysis of plate boundary types and locations • Earthquake data from search > Excel > ArcScene

  8. Phase 2: analysis of plate boundary types and locations • Volcanism from Excel; seafloor ages, plate motion vectors georeferenced, hillshaded DEMs

  9. Phase 3: preparation of a regional plate map • Plate/boundaries as shape files - limitations • Plate/boundaries in geodatabase with topological analysis; lines to polygons

More Related