Results 41 to 50 of about 22,252 (257)

Evolution of marine gravel dunes on the open shelf under multi-directional currents conditions

open access: yesFrontiers in Earth Science, 2022
On inner continental shelves, a variety of coarse grained bedforms, such as gravel dunes, are shaped by hydrodynamic and morphodynamic processes. The formation and evolution of bedforms reflect a balance between seabed and coastal morphology, sediment ...
Marta Ribó   +5 more
doaj   +1 more source

The Anthropogenic Footprint of Physical Harm on the Seabed of Augusta Bay (Western Ionian Sea); A Geophysical Investigation

open access: yesJournal of Marine Science and Engineering, 2022
Augusta Bay is an embayment of the Hyblean sector in south-eastern Sicily (Southern Italy) that faces the Ionian Sea and includes the Rada di Augusta, a wide littoral sector sheltered by breakwaters, which hosts intense harbor activities. Rada di Augusta
Francesca Budillon   +6 more
doaj   +1 more source

The Impact of Sea State Condition on Airborne Lidar Bathymetry Measurements [PDF]

open access: yes, 2012
Due to a large number of available Airborne Lidar Bathymetry (ALB) survey datasets and scheduled future surveys, there is a growing need from coastal mapping communities to estimate the accuracy of ALB as a function of the survey system and environmental
Axelsson, Andreas   +2 more
core   +2 more sources

The first ultra-high resolution Digital Terrain Model of the shallow-water sector around Lipari Island (Aeolian Islands, Italy) [PDF]

open access: yes, 2015
Very high resolution bathymetric map obtained through multibeam echosounders data are crucial to generate accurate Digital Terrain Models from which the morphological setting of active volcanic areas can be analyzed in detail. Here we show and discuss
Anzidei, M   +5 more
core   +2 more sources

Hydrous Carbonatitic Liquids Drive CO2 Recycling From Subducted Marls and Limestones

open access: yesGeophysical Monograph Series, Page 209-221., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Erwin Schettino, Stefano Poli
wiley  

+1 more source

Seafloor morphology and substrate mapping in the Gulf of St Lawrence, Canada, using machine learning approaches

open access: yesFrontiers in Marine Science
Detailed maps of seafloor substrata and morphology can act as valuable proxies for predicting and understanding the distributions of benthic communities and are important for guiding conservation initiatives.
Emily Sklar   +6 more
doaj   +1 more source

The International Bathymetric Chart of the Arctic Ocean (IBCAO) Version 3.0 [PDF]

open access: yes, 2012
[1] The International Bathymetric Chart of the Arctic Ocean (IBCAO) released its first gridded bathymetric compilation in 1999. The IBCAO bathymetric portrayals have since supported a wide range of Arctic science activities, for example, by providing ...
Accettella, Daniela   +30 more
core   +2 more sources

Measuring Centimeter-Scale Sand Ripples Using Multibeam Echosounder Backscatter Data from the Brown Bank Area of the Dutch Continental Shelf

open access: yesGeosciences, 2020
Backscatter data from multibeam echosounders are commonly used to classify seafloor sediment composition. Previously, it was found that the survey azimuth affects backscatter when small organized seafloor structures, such as sand ripples, are present ...
Leo Koop   +8 more
doaj   +1 more source

Seafloor depressions on the Nigerian margin: Seabed morphology and sub-seabed hydrate distribution [PDF]

open access: yesMarine and Petroleum Geology, 2020
Abstract Gas hydrate quantification using acoustic data requires proper knowledge of the mineralogy of their host sediment. In this paper, a petrophysical model allowing GH quantification at sites where mineralogy profiles are absent is proposed. This approach is applied to a high gas flux pockmark system in the Gulf of Guinea where in-situ acoustic ...
Taleb, F.   +4 more
openaire   +3 more sources

Polar Region Bathymetry: Critical Knowledge for the Prediction of Global Sea Level Rise

open access: yesFrontiers in Marine Science, 2022
The ocean and the marine parts of the cryosphere interact directly with, and are affected by, the seafloor and its primary properties of depth (bathymetry) and shape (morphology) in many ways.
Martin Jakobsson, Larry A. Mayer
doaj   +1 more source

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