https://github.com/geoscienceaustralia/ga-sammt

https://github.com/geoscienceaustralia/ga-sammt

Last synced: over 1 year ago
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• Host: GitHub
• URL: https://github.com/geoscienceaustralia/ga-sammt
• Owner: GeoscienceAustralia
• License: apache-2.0
• Created: 2023-12-05T02:27:40.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2024-12-17T01:25:50.000Z (over 1 year ago)
• Last Synced: 2025-03-27T13:46:11.227Z (over 1 year ago)
• Language: Python
• Size: 17.7 MB
• Stars: 3
• Watchers: 4
• Forks: 1
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# GA-SaMMT

[![Documentation Status](https://readthedocs.org/projects/ga-sammt/badge/?version=latest)](https://ga-sammt.readthedocs.io/en/latest/?badge=latest)

[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.4075248.svg)](https://doi.org/10.5281/zenodo.4075248)

Geoscience Australia's Semi-automated Morphological Mapping Tools (GA-SaMMT) for Seabed Characterisation

Seabed characterisation requires the measurement, description and classification of physical features on the seabed.

A key first step in this process is the identification of morphological forms, as derived from bathymetric data.

To facilitate rapid and consistent morphological mapping, Geoscience Australia has developed several semi-automated ArcGIS toolboxes that:

* Generate polygons from bathymetry surfaces that represent *bathymetric high* and *bathymetric low* seabed features

* Calculate metrics/attributes to describe the characteristics of the polygons

* Classify individual polygons into one of the bathymetric *high* or *low* seabed morphological features

The toolboxes adopt the suite of terms as presented in the glossary of seabed morphology deatures defined by [Dove, D., Nanson, R., Bjarnadóttir, L., Guinan, J., Gafeira, J., Post, A., Dolan, M.; Stewart, H.; Arosio, R, Scott, G.. (2020). A two-part seabed geomorphology classification scheme (v.2); Part 1: morphology features glossary. Zenodo.](http://doi.org/10.5281/zenodo.4075248).

The detailed description of the GA-SaMMT and its applications to several real-world case studies are presented in [Huang Z, Nanson R, McNeil M, Wenderlich M, Gafeira J, Post A and Nichol S (2023) Rule-based semiautomated tools for

mapping seabed morphology from bathymetry data. Front. Mar. Sci. 10:1236788. doi: 10.3389/fmars.2023.1236788](https://doi.org/10.3389/fmars.2023.1236788).

![Flow Chart of the Geoscience Australia semi-automated mapping tools](docs/source/images/fig1.jpg)

## Documentation

### User guide

See the [user guide](./User_Guide/GA-SaMMT_v2p0_user_guide.pdf) for a tutorial and walkthrough of the toolsets.

### Toolbox details

For more detailed information on the individual toolboxes see https://ga-sammt.readthedocs.io/en/latest/ 

## Toolboxes

The ESRI [toolboxes](./Tools) contains seven Python toolboxes:

* BathymetricHigh is used to map bathymetric high features and contains:

    * TPI Tool Bathymetric High

    * TPI LMI Tool Bathymetric High

    * Openness Tool Bathymetric High

* BathymetricLow is used to map bathymetric low features and contains:

    * TPI Tool Bathymetric Low

    * TPI CI Tool Bathymetric Low

    * Openness Tool Bathymetric Low

* AddAttributes is used to calculate attributes for bathymetric high and low features and contains:

    * Add Shape Attributes High Tool

    * Add Shape Attributes Low Tool

    * Add Topographic Attributes High Tool

    * Add Topographic Attributes Low Tool

    * Add Profile Attributes High Tool

    * Add Profile Attributes Low Tool

* AddAttributesFast is used to calculate attributes for bathymetric high and low features using multiprocessing and contains:

    * Add Shape Attributes High Tool Fast

    * Add Shape Attributes Low Tool Fast

    * Add Profile Attributes High Tool Fast

    * Add Profile Attributes Low Tool Fast

* ClassificationFeature is used to classify bathymetric high and low features into morphological categories as defined by [Dove et al](http://doi.org/10.5281/zenodo.4075248) and contains:

    * Classify Bathymetric High Features

    * Classify Bathymetric Low Features

* Accessory_Tools is used to help the mapping processes and contains:

    * Merge Connected Features Tool

    * Connect Nearby Linear Features Tool

    * Connect Nearby Linear HF Features Tool

    * Update Feature Boundary

* Surface is used to map three-class morophological surface and contains:

    * Morphological Surface Tool Bathymetry

    * Morphological Surface Tool Slope

## Publication and sample data

* See [here](https://dx.doi.org/10.26186/146832) for additional details including sample datasets.

* See [here](https://doi.org/10.3389/fmars.2023.1236788) for the detailed description of GA-SaMMT.