HELMAP: Geographic map of Mt. St. Helens Summit region

In RTOMO: Visualization for Seismic Tomography

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) ...

Example output

RTOMO documentation built on May 2, 2019, 3:35 p.m.