Joana Gafeira

Discovery and Fine‐Scale Mapping of Hadal Xenophyophore Habitat in the Nova Canton Trough, Central Pacific Ocean

Denise J. B. Swanborn, Joana Gafeira, Megan E. Cundy, Daniel C. Bates et autres

ABSTRACT The occurrence and heterogeneity of biogenic structures at hadal depths remain poorly mapped and quantified at ecologically relevant scales. Xenophyophores can be conspicuous biogenic components of deep‐sea sedimentary environments, but records of their abundance, spatial configuration, structural complexity and ecological role …

au (code pays fourni par la source)

Erosional processes on the slopes of Rennell Island and the Indispensable Reefs (Solomon Islands, Western Pacific)

Alexander Petrovic, Joana Gafeira, Joe O'Callaghan, Lizzy Myers et autres

Large erosional products such as scalloped scars, mass transport complexes and rockfalls are common features found on the steep slopes of isolated carbonate platforms. Factors and processes controlling these instabilities and their interactions are a subject of ongoing discussion. Here we are …

us, au (code pays fourni par la source)

ricarosio/CoMMa: CoMMa Toolbox v1.3

Riccardo Arosio, Joana Gafeira

Version 1.3 Updates Check and control on "." vs "," decimal delimiter for both variable input and pixel size. The script should now address the recurring problem with OS that use comma as decimal point. Delineation tool: 'InputDer' referenced before assignment issue …

gb, au (code pays fourni par la source)

Giant pit craters on the modern seafloor above magma-induced hydrothermal vent complexes of Scotia Sea, offshore Antarctica

Luı́s Somoza, Karin Andreassen, Andreia Plaza‐Faverola, Joana Gafeira et autres

Abstract Massive injection of 13 C depleted carbon to the ocean and atmosphere coincided with major environmental upheaval multiple times in the geological record. For several events, the source of carbon has been attributed to explosive venting of gas produced when magmatic …

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Giant Pit Craters in Scotia Sea, off Antarctica: A Modern Analog for Seafloor Gas Ejection from Intrusive Magma Hydrothermal Vent Complexes

Luı́s Somoza, Karin Andreassen, Andreia Plaza‐Faverola, Teresa Medialdea et autres

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CoMMa: A GIS geomorphometry toolbox to map and measure confined landforms

Riccardo Arosio, Joana Gafeira, Laurence Helene De Clippele, Andrew James Wheeler et autres

The Confined Morphologies Mapping (CoMMa) Toolbox, a novel ArcGIS Pro python toolbox expressly created for semi-automated seabed morphological mapping, is presented here. The toolbox includes a selection of tools for the pre-processing, delineation and description of confined features on a digital elevation …

ie, gb, br (code pays fourni par la source)

Rule-based semi-automated tools for mapping seabed morphology from bathymetry data

Zhi Xing Huang, Rachel A. Nanson, Mardi A. McNeil, Michal Wenderlich et autres

Seabed morphology maps and data are critical for knowledge-building and best practice management of marine environments. To facilitate objective and repeatable production of these maps, we have developed a number of semi-automated, rule-based GIS tools (Geoscience Australia’s Semi-automated Morphological Mapping Tools - …

au, gb (code pays fourni par la source)

A two-part seabed geomorphology classification scheme; Part 2: Geomorphology classification framework and glossary (Version 1.0)

Rachel A. Nanson, Riccardo Arosio, Joana Gafeira, Mardi A. McNeil et autres

Maps of seabed geomorphology derived from bathymetry data provide foundational information that is used to support the sustainable use of the marine environment across a range of activities that contribute to the Blue Economy. The global recognition of the value of the …

au, ie, gb, no (code pays fourni par la source)

A two-part seabed geomorphology classification scheme: Part 2 – a geomorphic classification framework and glossary

Rachel A. Nanson, Riccardo Arosio, Joana Gafeira, Mardi A. McNeil et autres

Maps of seabed geomorphology provide foundational information for a broad range of marine applications. To be most effective, geomorphic characterisation of the seabed requires standardised, multi-scalar and interjurisdictional approaches that can be applied locally, regionally and internationally using the best available data. …

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ATLAS Deliverable 8.3 - ATLAS research outputs

Stéphane Pesant, Joana Gafeira, Tim Collart, Kate E. Larkin

ATLAS has published a total of 462 research outputs in 2016-2020, and an additional 96 are currently in preparation. They consist of scientific articles (9%), data sets (17%), data products such as georeferenced maps (31%), and various “other” outputs (42%) that include …

gb (code pays fourni par la source)

Comma Toolbox: A GIS Geomorphometry Instrument to Map and Measure Confined Landforms

Riccardo Arosio, Joana Gafeira, Laurence Helene De Clippele, Andrew James Wheeler et autres

gb, br (code pays fourni par la source)

Morphology of small-scale submarine mass movement events across the northwest United Kingdom

Gareth D. O. Carter, Rhys Cooper, Joana Gafeira, John Allen Howe et autres

Given the potentially devastating consequences of shallow submarine landslides on infrastructure and human lives, it is imperative that we understand potential slope stability issues within marine coastal regions. In Scottish waters, our lack of knowledge regarding the nature of the seabed within …

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