ISGM-SGC: Standardized Seabed Geomorphology Classification Tool and Data

The International Seabed Geomorphology Mapping Working Group's Seabed Geomorphology Classifier (ISGM-SGC) is a standardized tool for classifying seabed features. It assigns five levels of geomorphology classification attributes and 16 additional attributes for describing geomorphic interpretations. The tool was developed by geoscience agencies from the United Kingdom, Norway, Ireland, and Australia to support consistent seabed mapping.

Use Cases

• Classifying seabed geomorphology based on a standardized five-level nomenclature structure.
• Creating consistent baseline seabed maps for ocean stakeholders based on the Part 2 classification framework.
• Integrating geomorphic interpretations into broader seabed mapping workflows using the 16 additional attributes.

Strengths

• Implements a standardized, peer-reviewed two-part seabed mapping approach (Dove et al., 2020; Nanson et al., 2023).
• Developed through international collaboration between multiple national geological surveys.
• Tool logic includes dynamic drop-down lists that update based on higher-level classification choices.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Data may reflect geographic bias inherent to the collaborating agencies' regions of focus.

Provenance

Source

International Seabed Geomorphology Mapping Working Group (ISGM), including Geoscience Australia, British Geological Survey, Geological Survey of Norway, Geological Survey Ireland, and University College Cork.

Collection Method

Developed as an Esri ArcGIS Pro Python tool using Python 3+ to implement a standardized classification framework.

Freshness

Last updated 2026-04-30 12:42:41.956901; freshness should be verified.