MBES bathymetry, pockmark base horizons and extracted pockmark polygons

General information Supplementary data for journal article investigating paleo-pockmarks using pseudo-3D sub-bottom profiler (SBP) data on the Chatham Rise, New Zealand. Warnke, F., Pecher, I. A., Strachan, L. J., Hillman, J. I. T., & Dugan, B. (2025). Cyclic Pockmark Formation Linked to Plio-Pleistocene Sea-Level Rise on the Chatham Rise, New Zealand. Geochemistry, Geophysics, Geosystems, 26(12), e2025GC012265. https://doi.org/10.1029/2025GC012265 Content Horizons PB-*_depth.tif: Individual pockmark base horizon grids from pseudo-3D SBP data (depth-converted) SBP_seafloor_depth.tif: Seafloor horizon grid from pseudo-3D SBP data (depth-converted) MBES_pseudo-3D_bathymety_5x5m.tif: Multibeam echosounder (MBES) bathymetry grid GIS pockmark_polygons.gpkg: Delineated and characterized pockmark polygons pockmark_polygons_local-minima.gpkg: Extracted local minima within pockmark polygons References The QGIS processing scripts used for the pockmark analysis and extraction for local minima are available on GitHub and archived on Zenodo.