Flow magnitude and drainage basins

Published: Aug 21, 2009 by J. Wood

Short title:flowMag.lsc

Inputs:A DEM (the Baranja Hill 25m DEM is used as an example).
Outputs:A raster containing flow magnitude values for the DEM and a raster containing drainage basins.

Purpose and use:

Script to calculate flow magnitude and drainage basins from a DEM. It demonstrates how recursive function calls in LandScript can be used to calculate zonal geomorphometric parameters using map algebra. To use this script, start LandSerf 2.3 or above and then open the LandScript editor (menu: Edit->LandSctipt Editor).
Part of this script appears in Chapter 14 of Hengl and Reuter (2008) [the Geomorphometry book]. This script runs slowly so is better as a demonstration of how recursive function calls can be made in LandScript rather than a production quality flow magnitude calculator.

Programming environment:Landserf
Status of work:Public Domain
Reference: Geomorphometry: Concepts, Software, Applications
Data set name: Baranja hill

Attachment:

flowMag.lsc_.zip

Dear colleagues,

I’m grateful if you can circulate information on this PhD opportunity in Italy. The potential candidates can contact me (strevisani@iuav.it) for further information. Here the main elements of the position:

Research topics: Predicting and supporting benthic and pelagic biodiversity through geomorphometry and machine learning

Link to the call (Italian and English): https://www.unipa.it/didattica/dottorati/dottorato-xli/bando-di-accesso-ciclo-41/

Position code [BIODIV.OGS]

Research headquarters OGS Trieste and University of Palermo

Funded by OGS - Istituto Nazionale di Oceanografia e di Geofisica Sperimentale

Key dates: Deadline: 7th August 2025 - 14:59 (Italian time)

There is a new paper (open access) describing a Machine Learning-based DTM for South America:

Laipelt L., Andrade B.C., Collischonn W., Teixeira A.A., Paiva R.C.D., Ruhoff A., 2024. ANADEM: A Digital Terrain Model for South America. Remote Sensing 16(13):2321. https://doi.org/10.3390/rs16132321

The GRASS GIS 8.4.0RC1 release provides more than 515 improvements and fixes with respect to the release 8.3.2.

Check the full announcement at https://github.com/OSGeo/grass/releases/tag/8.4.0RC1.

Please support in testing this release candidate.