Articles tagged with Landscape Evolution
Researchers found that the river recovered its natural shape within four years after mining stopped, but the local economy did not bounce back. The study recommends a fairer, more sustainable model for river sediment extraction to minimize environmental and human impacts.
Research shows glacial lakes in Alaska expanding 50% faster than previously recorded, posing significant hazards and altering ecosystems. The study identifies areas where lakes may form and grow, helping with infrastructure planning and predicting changes to ecosystems, hazards, and recreation.
Seabirds have a significant impact on plant growth and dune formation on uninhabited islands, with guano providing essential nutrients. The research highlights the importance of protecting seabird habitats to maintain ecosystem balance.
Asteroids in binary systems actively exchange rocks and dust through gentle, slow-motion collisions, reshaping them over millions of years. The DART mission's findings confirm the YORP effect, where sunlight makes small asteroids spin faster, causing material to fly off their surfaces.
Researchers are utilizing the SWOT satellite to study how rivers and streams shape the Earth's surface, transforming scale in river studies. By covering all rivers worldwide, SWOT enables tracking of dam failures and understanding their long-term effects on ecosystems.
A new method uses tiny crystals of zircon to study the past evolution of Australian landscapes, offering insights into how the environment responds to geological processes and climate change. The approach provides valuable information on the storage and reworking of sediments near the surface over millions of years.
The discovery of aluminum-rich kaolinite clay suggests that areas of Mars may have once supported humid climates and heavy rainfall comparable to tropical environments on Earth. The finding provides significant insight into the planet's past environmental stages and how it came to its current barren state.
The European Research Council (ERC) has awarded an €8.33 million Synergy Grant to a five-year project led by Professors Jun Borras, Esteve Corbera, Ian Scoones, and Anna Tsing. The 'Land and Life in the Anthropocene' project aims to reshape landscapes for more-than-human life through innovative framework and connected approaches.
Researchers found that CO2 ice blocks on Martian dunes create gullies through explosive sublimation, similar to a mole burrowing into sand. The process involves the block digging into the slope and moving downwards, leaving behind small ridges of settled sand.
A new study on Mars crater deposits reveals the planet went through repeated ice ages driven by shifts in its axial tilt, resulting in a gradual drying of the planet. The study provides insights that can be applied to Earth's changing environment and helps identify safe regions for future missions.
Two studies reveal that natural processes can bring organic-rich materials to the Mars rover, increasing its diversity of samples. Rockfalls in Oxia Planum may have originated from elsewhere on Mars and were deposited through a series of floods over 3.5 billion years ago.
A literature review highlights the importance of ditches in managing water resources, mitigating pollution, and anticipating environmental changes. Ditches can host unique ecosystems, feature rare species, and serve as sentinels for monitoring water quality and sea level rise.
Researchers found that the sediment surge after the Wenchuan Earthquake led to a significant increase in bedload flux, accounting for 65% of the overall sediment flowing through the river. The elevated flux persisted for at least ten years, with no evidence of declining back to background levels.
A global analysis using machine learning predicts glacial erosion rates for 180,000 glaciers worldwide, with most experiencing erosion between 0.02-2.68 millimeters per year. The study identifies complex factors influencing erosion, including temperature, water under the glacier and rock type.
Researchers discovered that rivers develop multiple channels if erosion outpaces deposition on their banks, leading to a widening and division of the channel over time. This understanding could revolutionize flood planning and restoration efforts for over 3 billion people worldwide.
A 1,200-tonne boulder in Tonga is one of the largest known wave-transported rocks, providing new insights into past tsunamis. Numerical modelling suggests tsunami heights of 50m lasting 90 seconds dislodged the boulder from its cliff-edge origin.
The 'Isle of Fire' video series, developed by Time for Geography, provides a 50-year perspective on the 1973 Heimaey eruption and its impact on volcanic hazard management. The series features cutting-edge techniques in eruption reconstruction and forecasting, as well as modern management strategies.
A new study from geologists at the University of Colorado Boulder found that ancient Mars was likely warm and wet, with valleys and channels formed by heavy precipitation. The team's findings add new evidence to a long-running debate in planetary science and suggest that water played a key role in shaping the Martian surface.
Scientists have discovered that channels carved by rivers have distinct curves compared to those cut by lava or ice. The research could be used as a diagnostic tool for sinuous channels on other worlds with unknown fluid origins.
Researchers found that ancient glaciers carved deep into the Earth's crust, releasing key minerals that altered ocean chemistry. This process created conditions that allowed complex life to evolve, with the influx of elements changing ocean chemistry at a critical time in evolution.
Research published in Nature Communications reveals that fewer forest fires are burning today than in the past, despite recent record-breaking fire years. This 'fire deficit' allows fuel to build up over time, creating conditions for more severe fires. The study highlights the importance of beneficial management fires on the landscape.
Researchers found evidence that repeated earthquakes like the 2024 Noto Peninsula earthquake shaped the region's topography. The study used satellite radar images to measure displacements caused by the earthquake, resulting in over 4m of uplift and emergence of new terraces along the northern coast.
A study by ETH Zurich scientists found that global warming's effects on plant recovery can last for thousands to millions of years. The research team discovered that the severity of climate shifts and the speed at which carbon is sequestered affect the duration of climate warming.
Researchers found that powerful waves triggered deep within the Earth can cause continental surfaces to rise by over a kilometre. The study explains why parts of continents experience substantial uplift and erosion, forming sweeping elevated regions known as plateaus.
A new study by UC Santa Cruz researchers uses computer simulations to explore the possibility of life-supporting conditions on ocean worlds. The research found that lower-temperature hydrothermal vents could be sustained under a wide range of conditions, increasing the chances of life existing on these celestial bodies.
Scientists at uOttawa have developed Fourier Quantum Process Tomography (FQPT) to validate quantum circuit performance. The technique allows for high-accuracy characterization with minimal measurements, enabling significant advancements in quantum computing.
Researchers used simulations to model the erosion of Titan's shorelines, finding that waves are the most likely explanation for the moon's lakes and seas. The team found that wave activity could have shaped the coastlines of lakes and seas on Titan.
A significant shift in the Nile River's evolution around 4,000 years ago may have contributed to ancient Egypt's agricultural economy prosperity and cultural achievements. The research found that changes in the landscape enlarged arable land near Luxor and improved soil fertility.
A new landscape evolution model suggests that the first humans in Australia migrated rapidly across the continent following riverine corridors and coastlines. The study identifies areas of archaeological significance and provides insights into the impact of climate-driven geography on human dispersal.
The Lunar Environment Monitoring System, developed by UMD researchers, will track seismic activity on the moon's surface during the upcoming Artemis III mission. The system's data will help prepare NASA for a long-term presence on other planetary bodies.
Researchers have identified internationally significant rock art sites in Arnhem Land that were intentionally selected for their critical vantage points. The Flinders University research team used innovative methods to model the environmental conditions 15,000-28,000 years ago, shedding new light on the locations and roles of these sites.
A joint research team has reported the discovery of buried palaeo-polygonal terrain beneath Utopia Planitia on Mars using the Zhurong rover's radar. This finding suggests that ancient Mars experienced a cold polar region and significant climate changes.
Researchers analyzed dolomite rocks and found a high proportion of C-13, indicating strong methane formation by microorganisms in water with low sulphate content. The sediment's chemical development is controlled by crater floor cooling and water supply, not climatic changes.
A new study from the University of Exeter emphasizes the importance of shared community spaces in addressing gentrification and its effects on rural communities. Dr. Joanie Willett's research found that these spaces can foster relationships, knowledge-sharing, and community action to adapt to changing futures.
Researchers have identified a decaploid genome structure in the Nepenthes gracilis pitcher plant, revealing subgenome dominance that contributes to evolutionary innovation. Recessive subgenomes are enriched with novel genes, particularly those related to unique traits like dioecy and carnivory.
The National Science Foundation has awarded $1.6 million to Emory University researchers to develop predictive models for farmers to adapt to climate change in Georgia, Iowa and Ohio. The project aims to create a public online tool to explore possible futures of agriculture at regional and state levels.
A new computer model reconstructs the evolution of Alpine ice cover with unprecedented precision, allowing scientists to understand past climate interaction with glaciers. The simulation provides a direct visualization of phenomena, making them accessible to a wide audience.
A researcher from Göttingen University advises on overcoming difficulties faced by mining communities in transition, suggesting a three-step approach centered around stakeholder collaboration. This approach combines early planning, local-based solutions, and targeted investments to foster economic and workforce transformation.
Researchers discovered that aging alters the pancreas's circadian rhythm by reorganizing its transcriptome. The study found that fibroblasts play a crucial role in regulating this reorganization, which affects the organ's resilience to aging-related pathologies.
Researchers at Stanford University have discovered a way to interpret the meaning of dune patterns, which can be used to understand environmental changes on planetary bodies such as Mars, Venus, and Titan. The study found that high interaction density between dunes signals recent or local changes in boundary conditions.
The giant Olympus Mons volcano on Mars has morphological similarities with many active volcanic islands on Earth, indicating contact between liquid water and lava. A vast ocean of liquid water once occupied the Red Planet's northern lowlands, according to recent work published in Earth and Planetary Science Letters.
Researchers found a major shift in Martian climate about 400,000 years ago, coinciding with the end of the last glacial period. The prevailing wind direction changed from northeast to northwest, eroding crescent-shaped dunes into longitudinal ridges.
Researchers reconstructed the paleoelevation history of Taiwan's mountains using ancient sediment samples, revealing a rapid upshift in elevation of about two kilometers over 1.3 to 1.5 million years ago. The study provides new insights into tectonic processes and their impact on global climate.
Researchers at Colorado State University have made a groundbreaking discovery in understanding how mountains form, revealing that deep Earth processes are the primary drivers of mountain building in subduction zones. By combining novel data sets and techniques with traditional geomorphology measurements, the team generated a long-term ...
Researchers argue that polders are an important part of China's water heritage, reflecting the country's long history of water management. Over 2,500 years, polders have evolved in response to changing societal needs, adapting to agricultural modernisation and urban encroachment.
Researchers used a high-performance computer simulation to study the impact of soil subsidence on permafrost thawing in the Arctic tundra. They found that uneven land subsidence leads to a drier landscape, which limits the process's acceleration through the end of the century.
The Eurasian Ice Sheet sculpted Europe's landscape through extreme erosion over the last 100,000 years, with climate and geology playing key roles. The study reveals vast networks of subglacial rivers, promoting faster ice flow and sediment transport, with significant implications for marine carbon sinks and coastal communities.
Researchers found that summer rainfall and autumn-winter dry days are increasing, leading to fluvial discharge and sediment load in rainy seasons and water deficits in dry seasons. The Pantanal's complex geomorphology, including mega-fans and self-affine landforms, makes it susceptible to anthropic interference.
A new study warns that climate change will negatively impact mountain landscapes and human activity, increasing risks of natural hazards like avalanches and river floods. Mountain communities are also affected, with traditional practices like transhumance and agriculture dying out due to changing weather patterns and water scarcity.
Researchers from University of Göttingen found that plant water stress, not termites, causes Namibia's fairy circles. The grasses within the circles died immediately after rainfall due to strong depletion of water, while surrounding grasses thrived.
The Perseverance rover has discovered rocks on Mars that are composed of large grains of olivine, a muddier version of peridot that tints many beaches dark green. These findings suggest that the planet had liquid water, air, and a magnetic field in the past, conditions similar to those when life first arose on Earth.
A recent study found that earthquakes and extreme rainfall lead to a significant increase in landslide rates in Nepal during the monsoon season. The research, published in Nature Communications, reveals that landscape damage caused by the April 2015 Gorkha earthquake increased landslide risk by six times.
The Sierra Nevada mountain range in California has a complex history, with two distinct periods of formation. The ancient range was formed around 100 million years ago as a volcanic chain, but was later dwarfed by a vast plateau. Volcanic activity around 40 million to 20 million years ago lifted the Earth's surface, forming new mountai...
Researchers found three phases of landscape development over 800 years, influenced by wars, politics and climate. Wars led to devastation and 'renaturalization', while agriculture and settlements had a lasting impact.
A new study quantifies landscape changes on barrier islands, revealing that storms can create habitat for coastal species. The research found varying impacts from two hurricanes, Irene and Sandy, which reshaped Pea Island National Wildlife Refuge.
A comprehensive investigation of a lake landscape in southern Wendland reveals that strong rises and falls in water levels were caused by climate changes, soil erosion, and vegetation. The study provides valuable insights into how landscapes respond to climatic shifts and offers clues for predicting future changes.
A new study finds that river systems exhibit lateral migration of channels, reorganizing drainage patterns into a dendritic structure. This phenomenon is not captured by existing numerical models and has significant implications for understanding river evolution and land use planning.
Researchers developed a laboratory device to mimic landscape formation, finding that hillslope processes play a key role in shaping valleys. The study's findings support a popular theory on landscape evolution, suggesting a scale-dependent balance between tumbling sediments and runoff processes.
Thomas A. Steven, a retired USGS research field geologist, received the 7th Annual Dibblee Medal for his outstanding contributions to field geology and geologic mapping. He was recognized for his work on complex volcanic structures, genesis of ore deposits, and landscape evolution.