Long-term observations of beach topography and nearshore bathymetry

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Category: Metereología y Oceanografía
Published on Saturday, 22 July 2023 08:45
Written by Administrator2
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HYDRO INTERNATIONAL

A long-term and multisensor dataset of topo-bathymetric surveys and accompanying environmental controls

By Stéphane Bertin, France Floc’h, Nicolas Le Dantec • September 30, 2022

To understand coastal change and anticipate what our future coast will look like, scientists carry out regular field surveys in the form of beach profiles and digital elevation models (DEMs). Until now, accessible data has remained scarce, particularly for the shoreface (the subtidal extension of the beach), where it is more difficult to collect data. With a relatively sheltered position, Porsmilin beach in Brittany (France) has been the scene of numerous topo-bathymetric surveys, and the dataset has recently been made available.

The Porsmilin Beach survey programme

The Porsmilin beach survey programme was launched in January 2003 by the European

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The global transition to remote and autonomous operations

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Category: Metereología y Oceanografía
Published on Tuesday, 18 July 2023 21:00
Written by Administrator2
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 HYDROINTERNACIONAL

The benefits and challenges facing the maritime industry

By Hugh Parker, Ross Macfarlane • January 15, 2021

Over the next five years, we will witness a significant reduction in the maritime industry’s reliance on larger vessels, as the focus on compact and agile uncrewed surface vessels (USVs) increases and a wider transition towards remote marine operations continues to gather momentum. The benefits as well as the legal framework challenges of remote and autonomous operations will have a profound impact on the energy and maritime industries.

The ability to plan, manage and monitor offshore projects, and to maintain assets and infrastructure, through remote operations and autonomous capabilities is increasingly critical within the energy and maritime industries. Through their flexible deployment and good connectivity with onshore remote operations centres (ROCs), USVs

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¿Qué consecuencias climáticas tendrá el fenómeno El Niño en 2023?

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Category: Metereología y Oceanografía
Published on Thursday, 06 July 2023 07:34
Written by Administrator2
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 euronews

 
Por Rebecca Ann Hughes  •  
última actualización: 04/04/2023

Los expertos aseguran que El Niño afectará a las temperaturas globales, al clima y a la vida marina. Se prevé que este año sea más caluroso que 2022 y el quinto o sexto más caluroso jamás registrado.

 

El Niño, el fenómeno meteorológico mundial, volverá este verano.

El término se designó para nombrar las temperaturas superficiales inusualmente altas en el Océano Pacífico.

El fenómeno climático podría tener efectos drásticos, desde olas de calor abrasador hasta tormentas más fuertes.

Los expertos predicen que El Niño afectará a las temperaturas globales, al clima y a la vida marina.

¿Qué es El Niño?

El fenómeno climático de El Niño es responsable del aumento de las temperaturas globales y del agravamiento de los fenómenos meteorológicos extremos.

 

La

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China Expands its Expeditions to the Arctic and Antarctic Regions

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Category: Metereología y Oceanografía
Published on Monday, 17 July 2023 06:09
Written by Administrator2
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China Expands its Expeditions to the Arctic and Antarctic Regions

 

Xue Long and Xue Long 2 (file image courtesy ABB)

PUBLISHED JUL 16, 2023 3:06 PM BY THE MARITIME EXECUTIVE

 

 

China has launched additional expeditions to the Arctic and the Antarctic as it seeks to expand its foothold in the polar regions. Last week, China’s natural resources authority said that the country is preparing for its 40th Antarctic expedition. At the same time, the authority flagged off its 13th Arctic Ocean mission.

“We are continuously improving the national polar observation and monitoring network and accelerating the construction of the fifth Antarctic research station,” said China’s Minister of Natural Resources Wang Guanghua.

In April, the Chinese Antarctic Scientific Expedition completed the 39th expedition to Antarctica.

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Shallow seabed mapping based on airborne Lidar bathymetry

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Category: Metereología y Oceanografía
Published on Thursday, 06 July 2023 07:27
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https://www.hydro-international.com/content/article/shallow-seabed-mapping-based-on-airborne-lidar-bathymetry?

 

Understanding and assessing the suitability of ALB for automatic seafloor mapping

By Łukasz Janowksi, Paweł Tysiąc, Agnieszka Kubowicz • July 3, 2023

Airborne Lidar bathymetry (ALB) is a modern measurement technology for obtaining rapid depth measurements in shallow underwater environments. The technique allows recording of the depth below the Secchi disk. ALB datasets are suitable for nearshore coastal mapping purposes, including the determination of submerged morphological bedforms and coastal protection structures. This article presents a novel methodological approach to understand and assess the suitability of ALB for the automatic classification and mapping of the seabed.

Human expansion into coastal areas and their intensive use for economic and recreational purposes require information on their state, evolution and functioning. Effective management of

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