fatiandofatiando.datasets)¶Load datasets from the internet.
CRUST2.0
Load and convert the CRUST2.0 global crustal model (Bassin et al., 2000).
fetch_crust2: Download the .tar.gz archive with
the model from the websitecrust2_to_tesseroids: Convert the CRUST2.0 model
to tesseroidsSample data
Download a Bouguer anomaly map of Alps (EGM 2008 model) in Surfer ASCII grid file format.
fetch_bouguer_alps_egm: Download the .grd archive with
the Bouguer anomaly of Alps (EGM 2008 model) from the websiteReferences
Bassin, C., Laske, G. and Masters, G., The Current Limits of Resolution for Surface Wave Tomography in North America, EOS Trans AGU, 81, F897, 2000.
fatiando.datasets.crust2_to_tesseroids(fname)[source]¶Convert the CRUST2.0 model to tesseroids.
Opens the .tar.gz archive and converts the model to
fatiando.mesher.Tesseroid.
Each tesseroid will have its props set to the apropriate Vp, Vs and
density.
The CRUST2.0 model includes 7 layers: ice, water, soft sediments, hard sediments, upper crust, middle curst and lower crust. It also includes the mantle below the Moho. The mantle portion is not included in this conversion because there is no way to place a bottom on it.
Parameters:
Name of the model .tar.gz archive (see
fetch_crust2)
Returns:
fatiando.mesher.TesseroidThe converted model
fatiando.datasets.fetch_bouguer_alps_egm(fname='bouguer_alps_egm08.grd')[source]¶Download the Bouguer anomaly of Alps (EGM 2008 model) in Surfer ASCII grid file format from https://gist.github.com/leouieda/6023922
Parameters:
The name that the archive file will be saved when downloaded
Returns:
The downloaded file name
fatiando.datasets.fetch_crust2(fname='crust2.tar.gz')[source]¶Download the CRUST2.0 model from http://igppweb.ucsd.edu/~gabi/crust2.html
Parameters:
The name that the archive file will be saved when downloaded
Returns:
The downloaded file name