Articles tagged with Coastal Processes
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Marine darkwaves are short-term episodes of underwater darkness that can severely impact kelp forests, seagrass beds, and other light-dependent marine life. The researchers developed a framework to compare these events across the globe, finding between 25-80 marine darkwaves along the East Cape since 2002.
Research shows that flooding in delta cities like Shanghai can expand by up to 80% and be much deeper by 2100 due to extreme climate events, sea-level rise and land subsidence. A major adaptation effort is required to raise defences and construct mobile flood barriers.
Researchers found three major vent areas aligned with active fault zones, controlled by the island's tectonic fabric. The discovery establishes Milos as a natural laboratory for studying hydrothermal activity, volcanism, and tectonics.
Most San Diego County beaches grew in width last year during the post-El Niño recovery phase. California's average beach width has remained stable across nearly four decades despite notable examples of beach erosion. Beach nourishment projects also contributed to recent increases in beach width.
Researchers developed artificial mangrove roots that mimic natural mangrove root systems, serving as an additional option to mitigate erosion in areas where hard structures have caused negative end effects. AMRs allow water to pass through and help reduce wave impact, promoting sediment retention and enhancing shoreline stability.
A new study has analyzed a rare flooding event in the Maldives in July 2022 and found it could become a far more common occurrence in the future. By 2050, predicted rises in sea levels, coupled with increased extreme weather events, may result in such flooding happening every two to three years.
A new study reveals that 16% of the Arctic Ocean's dissolved organic carbon comes from land, primarily from thawing permafrost and coastal erosion. This finding has significant implications for understanding how terrestrial organic matter affects Arctic marine ecosystems and the ocean's ability to store CO2.
Climate changes in Lake Turkana influenced fault activity and magma production, rewriting the story of human evolution. Researchers found that lower lake levels led to increased melting and faulting, with potential implications for future volcanic and tectonic activity in East Africa.
Researchers at the University of Technology Sydney discovered that tailored lipid supplements can significantly increase coral larvae's strength, speed, and survival rate. This innovation has major implications for reef restoration projects, which aim to improve larval supply but often face low post-settlement survival rates.
Researchers develop AI-powered methods for modeling the Gulf of Mexico's dynamics, achieving higher accuracy for short-term predictions and emulating 10-year dynamics without hallucinations. This breakthrough drives forward critical management of natural resources in the U.S. and Mexico, advancing AI technology in earth sciences.
A study published in Nature Geoscience found that North American ice sheets caused over 30 feet of global sea-level rise between 8,000 and 9,000 years ago. This discovery challenges decades of research and has significant implications for understanding climate change.
A new three-year agreement between the Pacific Marine Science Alliance Society and MEOPAR aims to strengthen national ocean research collaboration across Canada's coasts. The partnership will focus on addressing key challenges such as climate resilience, marine hazard prediction, and sustainable resource use.
Researchers found that kelp forests support nearby beaches with high biodiversity due to nutrient subsidies. The connectivity between kelp and beach ecosystems is a local process, with the strongest benefit within 10 kilometers of kelp forests.
The Mediterranean Sea is warming at a faster rate than the open ocean, posing significant risks to marine ecosystems. The study highlights the urgent need for action to protect these unique ecosystems, which could collapse or remain functional depending on political decisions made now.
Researchers at UC Santa Barbara have characterized low-frequency signals from breaking ocean waves, which can be used to monitor sea conditions. The team developed a method for identifying the acoustic and seismic signatures of breaking waves and located their sources along the coast.
A new ASU study identifies the most polluted areas of coastline in West Hawaiʻi and targets for remediation, providing critical data needed to mitigate sewage contamination. The research found that cesspools, septic systems, and coastal urban development are highly predictive of water contamination.
A new study published in Earth's Future journal reveals that sea-level projections from the 1990s were remarkably accurate, with global sea-level rise averaging about one eighth of an inch per year. The researchers compared these projections with recent satellite measurements and found a remarkable match.
A recent study warns that Rapa Nui's Ahu Tongariki platform and up to 51 cultural assets will be impacted by coastal flooding due to sea level rise. The research provides critical data for community discussion and planning, highlighting the urgent need to protect UNESCO world heritage sites.
New research warns that climate interventions in oceans carry significant risks and may repeat past mistakes if not regulated responsibly. Experts advocate for a governance approach prioritizing sustainability, equity, and adaptability to ensure effective solutions.
A new study by Macquarie University researchers found that adding colour to concrete panels increased marine biodiversity in Sydney Harbour. The team discovered that red panels supported communities distinct from other coloured panels, attracting higher numbers of green algae and barnacles.
Longer winter sea ice duration is associated with a 20% increase in atmospheric CO2 absorption by the Southern Ocean. Sea ice protects the ocean from strong winds, allowing it to absorb more CO2 during winter.
The Global Declaration of Commitment for Scientific Ocean Drilling aims to promote global cooperation and collaboration in ocean science. The declaration sets out core principles for transparent access to data and samples, inclusive participation, environmental responsibility, and alignment with the UN SDGs.
Geologists have connected a 120-million-year-old 'super-eruption' to its source, revealing insights into Earth's complex geological history. The discovery provides a more complete history of the Pacific Ocean basin and sheds light on volcanic activity in the region.
A small amount of Arctic groundwater releases an estimated 230 tons of organic carbon per day along Alaska's coastline, contributing to climate change and ocean acidification. This discovery highlights the significant role of freshwater discharge in the Arctic Ocean.
A study published in Environmental Microbiology sheds light on how microbial communities in coastal groundwater respond to changes in seawater. The research found that these microbes play a crucial role in maintaining coastal water quality, but their resilience is vulnerable to climate change.
The 105th Annual Meeting of the American Meteorological Society will address key issues in weather, water, and climate. The meeting features a Presidential Forum on physical, social, cultural, and economic impacts of climate change, with experts from the region of the Mississippi River Delta.
A team of researchers discovered that a 'tag-team' between the oceans and continents led to severe environmental crises, causing mass extinctions of marine species. The study found that chemical weathering pulses disrupted the oceans, leading to anoxic events that had profound impacts on marine ecosystems.
A new study found that microplastics impact plant reproduction, while seawater flooding causes greater tissue death in coastal plants. Combining both stressors amplifies threats to ecosystem wellbeing.
Nitrous-oxide emissions have increased by 40% over the past four decades, resulting in accelerating atmospheric accumulation of this potent greenhouse gas. Agricultural production is the largest source of emissions, and improving practices can help reduce nitrous-oxide emissions and water pollution.
The Global Ocean Artificial Light at Night Network aims to expand on previous research, providing a central resource for marine light pollution expertise. Light pollution poses significant ecological harm, including disruptions to daily rhythms and reproductive cycles of marine species.
Researchers provided first detailed estimates of sediment supply to coral reef islands, crucial for understanding climate change impacts. They found that around 0.1m³ (100kg) of sediment is delivered to islands per year, helping islands withstand rising seas.
A new research project will explore the potential for low-lying coral atoll islands to survive the impact of rising sea levels, contradicting previous forecasts. The five-year £2.8m ARISE project will conduct extensive field tests and laboratory experiments in the Maldives and Pacific.
Researchers from the University of Plymouth discovered coral reef bleaching at depths previously thought to be resilient, highlighting the vulnerability of mesophotic coral ecosystems to thermal stress. The study suggests that climate change is causing a deepening of the thermocline, leading to increased bleaching in the deeper ocean.
ASU's new collaboration, ʻĀkoʻakoʻa, aims to restore coral reef vitality and coastal sustainability through a partnership between scientists and local communities in Hawaiʻi. The initiative focuses on West Hawaiʻi island, where 120 miles of reef harbor diverse human and coral conditions.
A multidisciplinary team of scientists conducted a comprehensive study to understand the sources and sinks of plastic debris in the Southern North Sea. Local citizen scientists played a crucial role in tracking the distribution pathways of plastic particles, revealing that two-thirds were washed ashore within 25km of their release site.
A new study models likely future cliff retreat rates of two rock coasts in the UK, finding that rock coasts are likely to retreat at a rate not seen for 3,000-5,000 years. The researchers predict that rock coast cliffs will retreat by at least 10-22 meters inland due to accelerating sea level rise.
Researchers found coastal embayments experience episodic hypoxic events and increased hypoxic conditions compared to open coastline. These areas are likely to be impacted by climate change and ecosystem changes.
A global synthesis of modeling and observational data co-led by Princeton's Laure Resplandy details the complex interplay between streams, rivers, lakes, groundwater, estuaries, and more in storing and transporting carbon. The study has significant implications for enforcing international climate accords.
The study predicts that the Balearic Islands will lose between 56 and 65% of their beach area permanently due to climate change. This loss is mainly attributed to sea level rise, which will cause devastating inroads on the coastline.
The Centre for Doctoral Training in Sustainable Management of UK Marine Resources (SuMMeR CDT) will train 50 interdisciplinary PhD students to sustainably manage the UK's coasts and seas. The program focuses on subjects ranging from marine sciences to law, health, education, and economics.