Articles tagged with Coastlines
Researchers found that levee building and subsurface resource extraction account for 40% of land loss in the Mississippi River Delta. A new sediment diversion project may help reverse land loss by releasing sediment into the Barataria Basin.
A new study using satellite images found that glaciers on the Antarctic Peninsula are flowing up to 22% faster during summer months due to warmer ocean waters and melting snow. This speed-up, driven by reduced friction between ice sheets and underlying rock, poses a significant threat to global sea levels.
A team of researchers has identified the importance of rifted margins in the transition to a green economy. These continental margins harbor vast accumulations of rocks and hydrocarbon reserves, making them a potential location for new resources needed for a carbon-neutral economy. The study provides an overview of the processes that s...
A study by University of Gothenburg researchers identifies two distinct types of cod, 'offshore cod' and 'coastal cod', genetically adapted to different environments. The coastal cod remain in the fjords, but their adult stage is uncertain, with possible spawning locations still unknown.
Humans have added approximately 900 square miles of land to urban coastlines since 2000, primarily for industrial ports and luxury residential areas. The study found that coastal wetlands are particularly hard-hit, with more than half of tidal flats lost in the Yellow Sea due to reclamation.
A new study using high-resolution land elevation data finds the biggest increases in inundation will occur after the first 2 meters of sea level rise, covering more than twice as much land as older elevation models predicted. Coastal communities have less time to prepare for sea level rise than expected.
A team of researchers found that coastal habitats can adapt to rapid sea-level rise by utilizing abundant sediment, which can help salt marshes survive. The study's key finding highlights the importance of re-infusing sediment into estuary systems when dredging is necessary.
A University of Alaska Fairbanks-led study found that kelp farms can effectively remove nitrogen and carbon from coastal areas, with ribbon kelp being more efficient at absorption. This technology has the potential to mitigate climate change by storing atmospheric carbon.
Researchers found that larvae of the Atlantic mangrove fiddler crab survived less in warmer water and underwent physiological changes due to higher acidity. Marine heatwaves will be harmful to species and those that feed on them, with potential economic losses to fisheries. Further research is needed to understand the effects.
Researchers found that global wave models can vary in their estimates of extreme wave heights by up to 20 feet, which can lead to underprotected areas during extreme events. The study emphasizes the need for considering multiple models and modern observational data to better assess offshore and coastal risks.
Researchers tracked puffins with tracking devices, revealing they lose flying ability during 1-2 month molting period, making them vulnerable to severe weather conditions. The study suggests this timing is significant as climate change increases winter cyclones in the North Atlantic.
Researchers have found that corals in the northern Red Sea have not experienced mass bleaching despite high heat stress due to their acquired temperature tolerance around 7,000 years ago. The region's reefs are expected to be among the last standing by the end of the century under projected warming scenarios.
Scientists analyze past El Niño events to better understand climate patterns over the past 12,000 years. They found that Eastern Pacific events have increased in frequency, while Central Pacific and Coastal events have decreased, resulting in changes in hydroclimate in the tropical Pacific.
A new study found that 39 out of 43 California's coastal airports have assets exposed to projected flooding by 2100. Sixteen airports have assets within their boundaries, while 23 have assets outside their jurisdiction at risk from flooding. The study highlights the need for collaborative climate adaptation plans to address this issue.
A recent LSU study found significant land formation in two freshwater diversions on the state's coastline, including a 2-4.8 sq km increase in area over 17 years. The Davis Pond Diversion showed a dynamic environment with dramatic change, while the Caernarvon Diversion had no meaningful detectable changes.
New research reveals mangroves can withstand heavy metal contamination without adverse health impacts. Grey mangroves were found to tolerate high lead and zinc levels in contaminated sediment, highlighting their role in stabilising polluted regions.
A new study has shown that seagrass can reduce cliff erosion by up to 70% in sandy sediments due to its root mats binding the sand. The researchers also found that replanting seagrass in areas where it has disappeared is essential for mitigating coastal erosion.
A new study published in Marine Pollution Bulletin found significantly higher levels of polyethylene, polypropylene, acrylic, and polyamide in the North Atlantic gyre compared to other offshore locations. Inshore areas exhibited a diverse range of polymers, possibly influenced by proximity to various plastic sources.
Scientists at Michigan State University have discovered a way to use satellite views to understand and predict the formation of dead zones in coastal areas. The study found that satellites can provide near-real-time information on where, when, and how long hypoxic zones persist, enabling better management of these critical problems.
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 measured phycotoxin concentrations in bull sharks caught in the Indian River Lagoon, finding multiple toxins widespread or persistent in the environment. The study highlights dietary exposure as a key mechanism of toxin transfer to bull sharks.
Research has revealed that Fraser Island's formation was tied to the Middle Pleistocene Transition, a major change in earth's climate. This finding suggests that the island's creation and subsequent prevention of sand transport into the Great Barrier Reef set the conditions for coral growth and reef formation.
Researchers used drones to monitor Waikīkī Beach, finding that wave energy from south swells and trade-wind generated waves drive erosion and accretion. The studies provide insights into beach behavior and help inform management of the coastline for ecological, societal, and economic sustainability.
Scientists discovered that ancient fish favored cold, dark waters of the deep sea, challenging the assumption that shallow habitats have always been diverse. The study revealed three major events that drove speciation rates in the deep sea, including the breakup of Pangea and the Cretaceous Hot Greenhouse period.
Researchers at the University of the Basque Country analyzed beach safety flags and their management in Northern Spain, finding a lack of uniformity in colors, shapes, and sizes. A standardized system could improve safety, especially with inadequate signage and double markings that provide contradictory information.
A Tel Aviv University study reveals that the Israeli shoreline is contaminated with more than two million tons of microplastics, with Tel Aviv and Hadera beaches being the most polluted. The researchers warn that exposure to microplastic waste is unavoidable and poses a risk to human health.
A new study found that offshore mussel farms can increase species abundance, including Atlantic horse mackerel and European lobster, on degraded seabed habitats. The research suggests that this practice could have wider environmental benefits, supporting the national and international Blue Growth agenda.
Climate scientists predict faster-developing, wetter storms will ravage the U.S. Atlantic Coast as global temperatures rise. The study reveals a unique coastal phenomenon that fuels hurricane development, making it more common along the already hurricane-battered coastline.
A University of Washington-led study found that even low levels of human activity in protected areas can alter wildlife behavior. Wildlife activity dropped to zero when outdoor recreation levels reached around 40 visitors per week in Glacier Bay National Park.
Researchers found that conventional engineered solutions are limited in their ability to adapt to climate change, while nature-based solutions can help coasts absorb impacts of coastal floods and storm surges. The study suggests a shift towards resilience strategies such as living shorelines, constructed wetlands, and strategic retreat.
A marine heatwave in Baja California led to the loss of a native kelp forest, replaced by invasive algae species. The study found that the warm waters hindered native kelps while allowing invasive species to thrive, potentially affecting other organisms up the food chain.
Growing onshore algae in seawater-fed aquaculture systems along the Global South's coasts could increase food production by 50% and feed 10 billion people by 2050. Algae provide high protein content, essential amino acids, and minerals found in meat, making them a sustainable solution to climate change.
A Harvard T.H. Chan School of Public Health study found that hundreds of hospitals on the Atlantic and Gulf Coasts are at risk of flooding from Category 1-4 storms, with sea level rise expected to increase this risk by 22% this century. The study highlights the need for coastal hospitals to prepare for greater risks in the future.
A new study led by ICM-CSIC has revealed the complex geometry of the Alboran Sea faults system, which has been absorbing most of the deformation from plate collision. The research demonstrates that this region is one of the most important fault systems in the western Mediterranean and has a significant tsunami risk.
A new study of coastal geography and a medieval map proposes that two islands in Cardigan Bay, Wales, which are no longer exist, could have come into existence and disappeared due to erosion. The research, published in Atlantic Geosciences, suggests the islands may be remnants of a low-lying landscape underlain by soft glacial deposits.
Kelp forests, which sequester large amounts of atmospheric carbon, may struggle to trap it due to accelerating decomposition rates in warmer waters. A study found that sea temperature has a strong influence on decomposition rates, with kelp fragments degrading more slowly in cooler waters.
Researchers developed a lifecycle assessment-based framework to manage offshore oil spill cleanup waste. The study suggests combining centrifugation and landfilling as the most suitable remediation approach for low-impact spills.
Research highlights the impact of historical development on US coastal zones' exposure to sea level rise and hurricanes. The study uses historical data to better understand how development contributes to increased vulnerability.
Researchers at the University of Miami discovered rare deep-sea brine pools in the Gulf of Aqaba, providing insights into ocean formation on Earth and the search for life elsewhere. The unique environments hold secrets about the limits of life and potential anticancer properties.
Researchers have uncovered thousands of artifacts along Mexico's Yucatán Peninsula, shedding new light on the ancient Maya people who lived in a dynamic interplay between social and natural processes. The project has provided valuable insights into how the Maya adapted to environmental changes, such as rising sea levels, and offers a m...
A new computer model developed by Louisiana State University oceanographer Giulio Mariotti shows that barrier island retreat will accelerate by 50 percent within a century due to rising sea levels. The model challenges the common assumption that barrier islands respond instantly to sea level rise, revealing a lag between the two.
The construction of dams and changes in land use have significantly impacted the amount of sediment rivers carry to oceans. Sediment transport has decreased by 49% globally due to dam construction, while increasing on 36% of rivers in the south, primarily driven by deforestation.
Climate change is causing rapid warming in the Arctic Ocean, which may lead to shorter, more eco-friendly maritime trade routes. This could reduce the shipping industry's carbon footprint and weaken Russia's control over trade routes through the Arctic. New trade routes could also increase global shipping infrastructure resilience.
A new study finds that coastal wetlands in rural US areas will persist or expand due to rising sea levels, not be slowed by human barriers. The Chesapeake Bay region is expected to experience significant land loss, with over 600 square miles predicted to become inundated by 2100.
A new study by Stanford researchers shows that nature-based solutions, such as conserving marshlands and restoring beaches, can be as effective as concrete seawalls in protecting against sea-level rise. The research found that these solutions provide extra benefits, including opportunities for recreation, climate change mitigation thro...
A new study reveals that tidal flats in the southeastern US are under pressure from urbanization, leading to erosion and loss of these critical ecosystem guardians. The research highlights the need for sustainable management plans to mitigate the impacts of urban expansion on coastal environments.
A new study found that extreme weather events can mobilize hundreds of thousands of cubic meters of sand into beach systems, potentially offsetting shoreline retreat caused by sea level rise. Researchers used high-resolution measurements and specialized equipment to track sand movement before and after storms.
A study by Swansea University found that people find structures with a wide variety of sea life to be more visually pleasing and interesting, as well as more likely to relieve stress. The research suggests that designing seawalls to support biodiversity can benefit both wildlife and human wellbeing.
Researchers at UCF have identified 116 new gene variants in sea turtles that may protect them from a tumor-causing disease. The discovery sheds light on the role of MHC class I alleles in potentially safeguarding sea turtles against fibropapillomatosis.
The study analyzed tide gauge observations along coastlines in Europe and found that changes in storm surges have altered the likelihood of extreme sea-level events. While some areas see an increase in extreme flooding, others see a decrease, with human-induced climate change partly to blame.
A study by researchers at the University of Plymouth reveals that energy-efficient broad spectrum lighting is reducing the efficacy of coastal species' camouflage. This can have significant impacts on visually guided ecological processes, with certain color variations being more vulnerable to detection.
A study has shown that wind variations over the southern Red Sea are the main drivers of sea-level extremes, driving levels up and down depending on wind direction. This understanding is crucial for coastal planning and management to mitigate the impact of storm surges and coastal erosion.
A new research study by the University of Massachusetts Amherst fundamentally changes our understanding of how salt marshes acquire sediment. The majority of sediments are delivered by the ocean during storms, reversing commonly held assumptions about the role of rivers in building and maintaining these ecosystems. This discovery has s...
Researchers have discovered evidence of a 500-year-old landslide and associated tsunami in the Gulf of Aqaba, which could have implications for coastline development in Egypt and Saudi Arabia. The study predicts that future movement of the seabed might trigger more tsunamis in the region.
A University of Queensland-led study reveals that only 15.5% of global coastal areas remain undamaged, exposing the need for concerted efforts to conserve these ecosystems and mitigate climate change impacts.
Native marine macroalgae thrive in environments created by natural groundwater seeps, benefiting from enhanced nutrients despite lowered salinity levels. In contrast, tainted groundwater seeps support invasive species, threatening native algal dominance.
A UConn study found that adding 5-7 centimeters of sediment to salt marshes in Connecticut increases plant growth, keeping the marsh afloat and reducing costs. The technique can help coastlines in the Northeast stay ahead of rising sea levels by promoting carbon sequestration.
A 1.5°C temperature increase affects algae and animal species living on UK coastlines, with significant changes in species abundance and breeding patterns. The study highlights the importance of considering local temperature variations when predicting climate change impacts.
Researchers at Binghamton University used thermal imaging drones to detect coastal seeps on Easter Island, finding areas where freshwater emerges from the sea. The technology allows for high-resolution images of these sources, enabling researchers to better understand how ancient communities used them to survive.
Researchers found that areas protected under 'whole-site' Marine Protected Area (MPA) status have four-fold increases in fish abundance and diversity compared to unprotected areas. The study also showed significant benefits for commercially important fish species and conservation.