footprint_generation: Convert point/line infrastructure to spatial footprints

In tfullman/dia: Monte Carlo Development Simulation and Wildlife Impacts Analysis

Convert point/line infrastructure to spatial footprints

Description

footprint_generation is a helper function that converts point and line infrastructure locations, created by generate_cpf and generate_sat_rd, to spatial footprints of surface disturbance. This is used for each species-specific impact analysis (impact_caribou, impact_shorebird, and impact_brant).

Usage

footprint_generation(
  cpf.spdf,
  sat.spdf,
  rd.sl,
  proj.info,
  area.cpf = 100 * 4046.86,
  area.sat = 15 * 4046.86,
  road.width = 18.85953
)

Arguments

cpf.spdf	SpatialPointsDataFrame object indicating central processing facility (CPF) locations. Created by generate_cpf.
sat.spdf	SpatialPointsDataFrame object indicating satellite production facility locations. Created by generate_sat_rd.
rd.sl	SpatialLines object indicating gravel road centerlines. Created by generate_sat_rd.
proj.info	Desired projection string in EPSG code format ("EPSG:XXXX"), common to all spatial objects in the analysis.
area.cpf	Numeric value indicating the average size (sq. m) of a CPF footprint. Default value estimated based on BLM (2019b).
area.sat	Numeric value indicating the average size (sq. m) of a satellite production facility footprint. Default value from BLM (2019a) p.B-6.
road.width	Numeric value indicating the estimated road ground footprint width (m). Default value based on BLM (2019a) p.B-6. See Fullman et al. (in press) for details.

Value

List containing three SpatialPolygonsDataFrame objects: cpf_footprints, sat_footprints, and surf_disturb, which contains the combined footprint of CPFs, satellite pads, and roads.

References

BLM [Bureau of Land Management] 2019a. National Petroleum Reserve in Alaska Draft Integrated Activity Plan and Environmental Impact Statement. Bureau of Land Management, U.S. Department of the Interior, Anchorage, AK, USA.

BLM 2019b. Willow Master Development Plan Draft Environmental Impact Statement. Bureau of Land Management, U.S. Department of the Interior. Anchorage, AK, USA.

Fullman TJ, Sullender BK, Cameron MD, Joly K. in press. Simulation modeling accounts for uncertainty while quantifying ecological effects of development alternatives. Ecosphere.

tfullman/dia documentation built on Oct. 17, 2023, 6:31 p.m.