Variations in the bathymetry and bottom morphology of the Izu-Bonin Trench modelled by GMT

Lemenkova, P.

Автор: Lemenkova Polina
Журнал: BULLETIN OF GEOGRAPHY-PHYSICAL GEOGRAPHY SERIES
Том: 18
Номер: 1
Год издания: 2020
Первая страница: 41
Последняя страница: 60
DOI: 10.2478/bgeo-2020-0004
Аннотация: Cartographic visualisation is a central concept in geoinformatics, and Generic Mapping Tools (GMT) functionality provides a variety of modules for effective mapping. However, due to its specif- ic scripting approach, there is not enough reported experience of GMT mapping, comparing to tra- ditional GIS. This contribution introduces steps that can be taken to perform cartographic mapping and modelling using GMT. Geographically, this paper investigates the Izu-Bonin Trench in the Pacif- ic Ocean. The aim was to compare its geomorphology in two segments, and each was modelled by a series of profiles. The comparative analysis shows that the southern segment is deeper and is a more precisely V-shaped form with a steeper gradient slope. The northern part has an asymmetric slope with submarine terraces to the west and a straight shape to the east. The northern profile is based on 407 samples (13.5%) at depths of -5,600 to -5,800 m, followed by 304 samples at -5,800 to -6,000 m (10%). The southern histogram has a bimodal distribution with two peaks: 523 samples (20%) with depths of -5,800 to -6,000 m. The second peak (10%) is on the Bonin Ridge. The GMT proved to be an effective instrument for marine geological mapping, 3D and 2D modelling, statisti- cal analysis and graphical plotting.
Добавил в систему: Леменкова Полина Алексеевна

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Variations in the bathymetry and bottom morphology of the Izu-Bonin Trench modelled by GMTстатья

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