Hi, I'm an error. x

Topographic Indices, Baltimore


Authors: Christa Kelleher Lauren McPhillips
Owners:
Resource type: Composite Resource
Storage: The size of this resource is 2.1 GB
Created: Jul 15, 2019 at 4:35 p.m.
Last updated: Jul 15, 2019 at 6:53 p.m.
Citation: See how to cite this resource
Content types: Geographic Raster Content 
Sharing Status: Discoverable
Views: 33
Downloads: 0
+1 Votes: 1 other +1 this  (You need to be logged in to rate this.)
Comments: No comments (yet)

Abstract

Topographic indices calculated in support of Kelleher and McPhillips (in review). We calculated two topographic indices - absolute sink depth (m) and topographic wetness index (-) - using TauDEM (v. 5.3) software and the D-infinity flow routing algorithm.

Watersheds include Gwynns Falls [gwynn] and Jones Falls [jones]. Naming convention and sites are shown in the associated manuscript. Note that processing for Baltimore is limited to the extent of each watershed that overlaps with the Baltimore city limits, though processing occurred for the entire watershed and was masked to this area.

Values were processed based on the LiDAR digital elevation model (DEM) for Baltimore, linked below in references. As presented in the associated manuscript, all topographic index values were extracted for all surfaces (e.g., bare soil, pavement, sidewalks, and vegetated areas) that excluded open water and building footprints (where topographic processing and DEM coverages are less reliable). Land cover datasets are linked below.

Naming convention for all files first specifies watershed name (Baltimore; gwynn, jones) followed by topographic index type (twi = topographic wetness index, sink = sink depth).

Descriptions for how each topographic index are calculated are specified in the associated manuscript. Generally, sink depths were calculated by differencing the filled and unfilled DEMs, and TWI was calculated from topographic slope and accumulated area, both processed within TauDEM (note: when negative slopes were calculated, these were replaced with very small values, e.g., 0.001).

Subject Keywords

  • No subject keywords have been added.
  • ${ k }

Duplicate. Keyword not added.

Error: ${ error }
Deleting all keywords will set the resource sharing status to private.

Resource Level Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
North Latitude
39.4316°
East Longitude
-76.4787°
South Latitude
39.2234°
West Longitude
-76.7891°

Content

  You do not have permission to see these content files. Please contact the Authors if you wish to obtain access.

References

Credits

Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
National Science Foundation Urban Resilience to Extremes Sustainability Research Network 1444755

How to Cite

Kelleher, C., L. McPhillips (2019). Topographic Indices, Baltimore, HydroShare, http://www.hydroshare.org/resource/9afed1aa2aa348fa9c199df30938e9d5

This resource is shared under the Creative Commons Attribution CC BY.

 http://creativecommons.org/licenses/by/4.0/
CC-BY

Comments

There are currently no comments

New Comment

required