HELMAP {RTOMO}R Documentation

Geographic map of Mt. St. Helens Summit region

Description

Geographic map of Mt. St. Helens Summit region. Lnes showing water shed and outline of tree line prior to 1980 eruption.

Usage

data(HELMAP)

Format

STROKES
list of meta data for map
nam
name of stroke
num
number of points
index
starting index
col
color
style
style, 1,2,3
code
geographic code
LAT1
Lower left latitude
LAT2
upper right latitude
LON1
Lower left longitude
LON2
upper right longitude
POINTS
points structure
lat
latitudes
lon
longitudes
PROJ
projection list
type
type of projection, 2=UTM
LAT0
origin latitude
LON0
origin longitude
LAT1
other parameters that depend on projection
LAT2
other parameters that depend on projection
LATS
other parameters that depend on projection
S
other parameters that depend on projection
N
other parameters that depend on projection
LONS
other parameters that depend on projection
E
other parameters that depend on projection
W
other parameters that depend on projection
DLAT
other parameters that depend on projection
DLON
other parameters that depend on projection
FE
false easting
FN
false northing
name
name of projection

References

Lees, J. M. (1992): The magma system of Mount St. Helens: Non-linear high resolution P-wave tomography, J. Volc. Geoth. Res., 53(1-4), 103-116.

Examples

data(HELMAP)
## maybe str(HELMAP) ; plot(HELMAP) ...

[Package RTOMO version 1.0-6 Index]