A fairly common problem is usually the access to spatial information, in this case Digital Elevation Models (DEM) are not always available to everyone, either by cost, availability, or lack of knowledge to obtain them.
In this post we are going to see how to download a 12.5 meter resolution DEM from ALOS PALSAR, which from 2006 to 2011, PALSAR’s L-band Synthetic Aperture Radar (SAR) allowed detailed, all-weather, day and night observation and repeat-pass interferometry (more information can be found here).
To download a free DEM you first need to register at https://search.asf.alaska.edu/#/ (if you already have an EarthData account, you can log in directly).
The next step is to draw a polygon of the area of interest.
Then in the Dataset field select ALOS PALSAR – 2006 to 2011.
Then go to the Filters menu (three dots together), in the Additional Filters > Filter type section select Hi-Res Terrain Corrected, then click on the Search button.
Finally select the DEM that corresponds to your study area within the results panel, on the right hand side (or bottom) the DEM preview is shown, and you can also see the file size and download button.
the satellite view is not showing in order to select my area of interests
Is there no better option than a DEM from 2011 to be used in 2021? In our field, we are seeing displacements in the 20-120mm year and more. Along coastal stretches of Califonia, Oregon, Washington, and other areas radar data from ALOS2 – 2016-2021 can exhibit these rates and more …
Also for Staring Spotlight TSX mode <1m data …. this is not favorable, nor for the .3m and .25 meter data soon coming from Capella, Umbra, and Iceye.
What plans exist for an updated Global DEM in the < 2M arena? Copenicus 10M is a bit better no?
The ALOS DEM is a combo of data types as I understand it?
thanks so much for your explain
El modelo es el SRTM (banda C) de 30 m, sobremuestreado!!!! up scaling!!!!! Las alturas son elipsoidales y no ortométricas. Se necesita hacer la transformación.
Dear friend, thank you for sharing the useful information.
dem
Je souhaite télécharger les images SRTM pour les utiliser à but non commercial
good
i want to download DEM high resoulation
Wow. That is awesome! Thank you for sharing.
I want DEM to delinate watershed.