Topography of the 2018 lava flows of the Sierra Negra volcano, Ecuador
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Topography of the 2018 lava flows of the Sierra Negra volcano, Ecuador¶
This is a structure-from-motion point cloud of the 2018 lava flows of the Sierra Negra volcano, located on the Galápagos islands, Ecuador. The survey covers a small region at the flank of the volcano and shows different structures and terrain roughness on the lava flows.
Original source: Carr, B. (2020). Sierra Negra Volcano (TIR Flight 3): Galápagos, Ecuador, October 22 2018. Distributed by OpenTopography.
import pandas as pd
import pygmt
import ensaio
Download and cache the data and return the path to it on disk
fname = ensaio.fetch_sierra_negra_topography(version=1)
print(fname)
Out:
/home/runner/work/_temp/cache/ensaio/v1/sierra-negra-topography.csv.xz
Load the CSV formatted data with pandas
data = pd.read_csv(fname)
data
Make a PyGMT map with the data points colored by the elevation.
fig = pygmt.Figure()
fig.basemap(
region=[
data.longitude.min(),
data.longitude.max(),
data.latitude.min(),
data.latitude.max(),
],
projection="M15c",
frame=True,
)
pygmt.makecpt(cmap="viridis", series=[data.elevation_m.min(), data.elevation_m.max()])
fig.plot(
x=data.longitude, y=data.latitude, color=data.elevation_m, cmap=True, style="c0.01c"
)
fig.colorbar(frame='af+l"elevation [m]"')
fig.show()
Out:
<IPython.core.display.Image object>
Total running time of the script: ( 1 minutes 9.049 seconds)