Articles tagged with Subsidence
Researchers have found that sea levels in the Chesapeake Bay region deviate from global trends due to glacio-isostatic adjustment, with implications for future subsidence and sea-level rise. The study suggests that the region will continue to experience subsidence for millennia, exacerbating coastal erosion and resource loss.
Researchers have developed a novel deformation monitoring technique using bistatic differential interferometry with GNSS as transmitters, achieving high accuracy and low cost. The method combines DGNSS and D-InSAR for real-time subsidence monitoring, potentially replacing traditional techniques and enhancing national security.
A novel deformation monitoring method using bistatic differential interferometry GNSS as illuminators offers high accuracy, low cost, and real-time subsidence monitoring for high-speed railway roadbed. The system combines DGNSS and D-In-SAR techniques to achieve better than 1mm real-time accuracy.
The Mississippi Delta is facing an uncertain future due to the combined effects of sea-level rise and land subsidence. The study uses precise GPS data and tide gauge records to measure subsidence rates, revealing that parts of the delta may not be viable in the long term.
Researchers found that restored wetlands act as net sinks of atmospheric carbon dioxide, but are large sources of methane emissions. The study's results suggest that restoring drained agricultural land-use types can help reverse subsidence and capture carbon, making it a promising approach to mitigate climate change.
A new study estimates that the global cost of flooding could increase from $6 billion to $52 billion per year, with some cities facing losses exceeding $1 trillion if inaction is taken. The top 10 most at-risk cities are in developed and developing countries, with high wealth but low protection levels.
Typhoon Soulik's eyewall appears to have rebuilt as evidenced in NASA satellite imagery. The storm is expected to make landfall in southeastern China over the weekend of July 13 and 14.
Geologists have discovered that rocks in different parts of the world have unique histories, with some dating back over 150,000 years. The studies also found that heavy mineral assemblages reveal changing exhumation patterns and trench tectonics in the Mesozoic Chugach Accretionary Complex.
Researchers at Oregon State University have detected a thermal 'uplift' signal in satellite imagery from the Lop Nor nuclear testing site in China. The change occurred four years after the tests and corresponds to known surface locations above past tests, providing a potential new tool for analyzing the strength of detonation.
Scientists have discovered new records of shelled amoebas living with methane seeps and ancient trilobites. Additionally, researchers have found evidence of micrometeorites in 240 million-year-old sediments and a deep biosphere community in the Atlantic Ocean.
Researchers at the Virginia Institute of Marine Science found that absolute sea level in Chesapeake Bay is rising at a rate of about 1.8 millimeters per year, slower than the global average. However, local subsidence rates are significantly higher, adding up to a growing threat of coastal flooding and erosion.
Researchers found significant spatial variations in land movement along the US Atlantic coast, with mid-Atlantic regions subsiding twice as much as northern and southern areas. Coastal subsidence enhances sea-level rise, leading to shoreline erosion and loss of wetlands.
Researchers employed a novel combination of geological and model reconstructions to address spatial variations in sea-level history along the east coast of England. Sediment compaction explained the variations in sea-level observations, revealing striking correlations to the thickness of overlying sediment.
A new coastland map produced by Durham University scientists charts the post Ice-Age tilt of the UK and Ireland, revealing areas at high risk of sea-level rises. The map helps local authorities target resources to areas where sea level rises will be greatest, saving money on defenses.
Undergraduate students can learn problem-solving skills by analyzing subsidence and restoration of organic wetland soils. This approach emphasizes cross-disciplinary concepts, such as mass-volume relationships, to help students understand complex soil processes.
The Dead Sea's subsidence is attributed to a tectonic concurrence between the African and Arabian plates, resulting in a pull-apart basin. The basin's evolution is controlled by four parameters: brittle layer thickness, basin width, strike-slip displacement length, and upper mantle viscosity.
A team of researchers used seismic waves to create CAT-scan-like images of the Soufriere Hills Volcano's internal structure. The study found an elongated magma chamber that fills with magma, causing it to decompress and resulting in greater eruptions than expected.
The world's fastest-growing mud volcano, Lusi, is collapsing and could subside to depths of over 140 meters, according to new research from Durham University. The volcano, which erupted in 2006, has caused significant damage and displacement, with 14 people killed and 30,000 evacuated.
Scientists investigate how volcanic ash affects ecosystems, find evidence of ancient desert landscapes and discover fossilized bone marrow in 10 million-year-old amphibians. Researchers also analyze the erosion rates of the Alps and explore the origins of zircon crystals.
A new study by Tulane University and Utrecht University suggests that compaction of the shallowest and most recent delta sediments is the main cause of subsidence in coastal Louisiana. The research challenges the notion that tectonic subsidence bears much of the blame for Louisiana's coastal geologic problems.
The American Geophysical Union convened an interdisciplinary conference to discuss the science behind hurricane protection and rebuilding on the US Gulf Coast. Key findings include the need for improved seasonal forecasts, better wind data, and enhanced shoreline topography to simulate storm surge and flooding probabilities.
Researchers mapped subsidence in New Orleans using satellite radar imagery, revealing areas where land is sinking at alarming rates. The study highlights the need for revised reconstruction plans and more durable levees to address the growing threat of flooding.
Researchers have found evidence of coastal subsidence preceding major subduction zone quakes, potentially providing a warning system for tsunami alerts. The study suggests that areas along subduction zones should monitor subsidence to predict potential earthquakes and tsunamis.
A team of geologists reports that the Moho boundary is absent beneath California's San Joaquin Valley, due to a mantle drip. The study provides insight into mountain-building processes and explains how the Sierra Nevada formed.
Researchers at Virginia Tech are conducting a large-scale aquifer test to improve groundwater management. They are using GPS antennas and remote-sensing radar satellites to measure land subsidence with millimeter accuracy, which will help managers maintain the elastic range of the aquifer and prevent land subsidence.
A new framework for predicting underground rock geometry has been developed, enabling coal and gas companies to better understand their drilling operations. The research uses electric logs from wells and field work to interpret the types of sandstone bodies present, which are critical for finding deposits.
Measuring horizontal strain is crucial for understanding how aquifers respond to pumping, as it affects both vertical and horizontal compression. Scientists have found that aquifer compression occurs in a horizontal direction, leading to land subsidence.