How is climate change impacting the world’s ocean

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Category: Metereología y Oceanografía
Published on Tuesday, 22 August 2023 03:13
Written by Administrator2
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https://www.un.org/en/climatechange/

science/climate-issues/ocean-impacts

The ocean has long taken the brunt of the impacts of human-made global warming, says UN Climate Change. As the planet’s greatest carbon sink, the ocean absorbs excess heat and energy released from rising greenhouse gas emissions trapped in the Earth’s system. Today, the ocean has absorbed about 90 percent of the heat generated by rising emissions. 

As the excessive heat and energy warms the ocean, the change in temperature leads to unparalleled cascading effects, including ice-melting, sea-level rise, marine heatwaves, and ocean acidification. 

These changes ultimately cause a lasting impact on marine biodiversity, and the lives and livelihoods of coastal communities and beyond - including around 680 million people living in low-lying coastal areas, almost 2 billion who live in half of

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Desarrollo de modelos batimétricos digitales a partir de datos hidroacústicos y fotogramétricos

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Category: Metereología y Oceanografía
Published on Friday, 18 August 2023 06:55
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 Hydro International

Técnicas geoinformáticas para combinar datos batimétricos para aguas someras y ultrasomeras

Por Jacek Łubczonek , Witold Kazimierski, Grzegorz Zaniewicz • 

7 de junio de 2022

Los vehículos no tripulados, tanto de superficie como aéreos, se utilizan cada vez más para levantamientos hidrográficos. Si bien la tecnología de adquisición de datos que utiliza estas plataformas es generalmente conocida, la fusión de estos datos aún es objeto de mucha investigación, y los métodos aplicados a menudo dependen de los sensores utilizados y las propiedades del área de estudio. Este estudio presenta un método para fusionar datos adquiridos utilizando plataformas de medición de vehículos de superficie no tripulados (USV) y vehículos aéreos no tripulados (UAV) para desarrollar un modelo batimétrico digital. El caso analizado se refiere a aguas someras y ultra

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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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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
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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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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
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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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