VELMAP: Presentation Slides
Bruce Raup (Presenter)
Slide 1: Overview of the VELMAP Project
VELMAP is a new program to compile existing ice velocity data for the Antarctic Ice Sheet. It is:
- Coordinated by the National Snow and Ice Data Center (NSIDC) as part of the Glaciological Data Center (an ongoing NSF grant)
- Intended (in part) to support the upcoming AMM-2 and -3 velocity InSAR mapping program
- Modeled after the BEDMAP program and the RAMP DEM effort
Slide 2: Project Objectives
- To compile a fundamental data set for the assessment of mass balance of the Antarctic Ice Sheet
- To provide comparison velocity data for the AMM-2 mapping: filling gaps in the acquisition, and for change direction
- To identify areas of recent velocity change
- To examine characteristics of ice flow by combining the VELMAP compilation with elevation and thickness compilations (RAMP DEM and BEDMAP)
Slide 3: Methods
To achieve our objectives for VELMAP, we will:
- Gather existing data set in the literature and make them available over the Web
- Actively solicit data sets from investigators
- Include recent InSAR and Landsat/SPOT data sets
- Use balance velocity to assist in interpolation of coarse data sets
- Attempt to define the velocity field of the continent at a 400 m grid (identical to the RAMP DEM 400 m grid)
- Seek additional support as part of the Landsat 7 Science Team follow-on work
These activities have already begun.
Slide 4: Context - Links to Other Programs
- VELMAP is currently being supported at NSIDC under existing NASA grants for Landsat 7 and RAMP data analysis. VELMAP will contribute to these grants by compiling a velocity data set for comparison with the upcoming RAMP AMM-2 InSAR map.
- We intend to request specific support for VELMAP under the Landsat 7 program.
- There is overlap between VELMAP and GLIMs (Global Land Ice Measurements from Space) in the type of data to be archived. VELMAP will therefore benefit from NSIDC's role in GLIMS.
Slide 5: Resources - URLs
A few more slides followed showing the contents of this website.
$Date: 2000-12-07 13:41:23-07 $