There are 4098 Preprints listed.
Published: 2023-10-04
Subjects: Climate, Geochemistry
The past evolution of the East Asian Monsoon (EAM) was affected by remote climate processes. However, there is uncertainty surrounding these teleconnections and their impact on each seasonal EAM mode during periods of rapid global change. Here we use the unique biannual precipitation patterns of central Japan to reconstruct winter and summer EAM evolution during the last glacial termination [...]
Published: 2023-10-04
Subjects: Education, Engineering, Social and Behavioral Sciences
Amidst the escalating impacts of climate change and extreme weather events, participatory decision-making in water management stands out as a sustainable approach for disaster risk reduction. Hydrological disasters, such as floods and droughts, are increasing globally due to anthropogenic activities, necessitating adaptation in water infrastructure. The OECD projects severe water stress for 2.3 [...]
Published: 2023-10-03
Subjects: Atmospheric Sciences, Environmental Sciences, Oceanography and Atmospheric Sciences and Meteorology, Oil, Gas, and Energy, Physical Sciences and Mathematics
Methane is the second most important anthropogenic greenhouse gas, amounting to 60% of the radiative forcing from CO2 since pre-industrial times based on emitted compound. Global atmospheric methane concentrations rose by 10-15 ppb/yr in the 1980s before abruptly slowing to 2-8 ppb/yr in the early 1990s. This period in the 1990s is known as the ``methane slowdown'' and has been attributed to the [...]
Published: 2023-10-03
Subjects: Earth Sciences, Fluid Dynamics, Geomorphology, Other Earth Sciences, Physical Sciences and Mathematics, Physics, Planetary Geomorphology, Planetary Sciences, Sedimentology
Dunes form where winds blow over a bed of mobile sediment grains – conditions that are common in our solar system. On Earth, dunes abound in arid continental interiors and along sandy coastlines. Dune fields have also been recognized on other planetary bodies, including Venus, Mars, Saturn’s moon Titan, and Pluto. Despite the relatively basic conditions required for their formation, dunes adopt a [...]
Published: 2023-10-03
Subjects: Atmospheric Sciences, Climate, Meteorology, Physical Sciences and Mathematics
Climate change has been associated with alterations in precipitation patterns and increased vulnerability to floods and droughts. The need for improvements in forecasting and monitoring approaches has become imperative due to flash floods and severe flooding. Rainfall prediction is a challenging but critical issue owing to the complexity of atmospheric processes, the spatial and temporal [...]
Published: 2023-10-03
Subjects: Biology, Ecology and Evolutionary Biology, Life Sciences, Terrestrial and Aquatic Ecology
Trophic state (TS) characterizes a waterbody’s biological productivity and depends on its morphometry, physics, chemistry, biology, climate, and history. However, multiple TS operational definitions have emerged to meet use-specific classification needs. These differing operational definitions can create inconsistent understanding, can lead to miscommunication, and can result in siloed [...]
Published: 2023-10-03
Subjects: Physical Sciences and Mathematics
Seismic data plays a crucial role in investigating subsurface geological structures, but it is often contaminated by noise that reduces interpretability. This study investigates the application of wavelet deconvolution for enhancing seismic data quality by attenuating noise. The methodology involves the preprocessing of field data from Wyoming's Teapot Dome, implementation of trace-by-trace [...]
Published: 2023-10-03
Subjects: Fresh Water Studies, Geochemistry, Hydrology, Meteorology
The Lake Suigetsu sediment cores exemplify a high-quality archive of palaeoclimatic change in East Asia during the past 150 ka. Robust interpretation of stable isotope-based proxy reconstructions from the Suigetsu cores can be aided by a greater understanding of the factors affecting the isotope composition of the lake and how it relates to that of precipitation. Here we use extended contemporary [...]
Published: 2023-10-02
Subjects: International and Area Studies
The pollution and the progressive depletion of resources are global problems that affect all humanity, but their approach is affected by the different sociopolitical and economic conditions present in the different regions. Thus, the objective of this work is to implement and analyze a methodological structure based on the Solow/Green-Solow models that facilitates the identification and [...]
Published: 2023-10-02
Subjects: Engineering
Advanced Very High-Resolution Radiometer (AVHRR) satellite observations have provided the longest global daily records from the 1980s, but the remaining temporal inconsistency in vegetation index datasets has hindered reliable assessment of vegetation greenness trends. To tackle this, we generated novel global long-term Normalized Difference Vegetation Index (NDVI) and Near-Infrared Reflectance [...]
Published: 2023-10-02
Subjects: Physical Sciences and Mathematics
The 2015 moment magnitude Mw=8.3 Illapel earthquake is the largest mega-thrust earthquake that has been recorded along the Chilean subduction zone since the 2010 M_W=8.8 Maule earthquake. Previous studies indicate a rupture propagation from the hypocenter to shallower parts of the fault, with a maximum slip varying from 10 to 16 meters. The amount of shallow slip differs dramatically between [...]
Published: 2023-10-02
Subjects: Physical Sciences and Mathematics
Earthquakes beneath the foreland basins of the Andes and Tibet follow a simple pattern, with normal-faulting events from 0--20 km depth and reverse-faulting events from 30--50 km depth. The switch in faulting style with depth suggests that the elastic stresses generated by flexure within these forelands are large enough to break faults, with opposite senses of horizontal strain either side of a [...]
Published: 2023-10-02
Subjects: Earth Sciences, Environmental Sciences
Due to tidal dissipation, the Earth’s rotation has been slowing down, but the past rates of this process remain subject of debate. Here we conducted a comprehensive cyclostratigraphic analysis of eight geological datasets to further constrain the Earth's rotation history from the Neoproterozoic to Mesozoic. Our results allow us to further test theoretical physical tidal models, and support a [...]
Published: 2023-10-02
Subjects: Sustainability
The carbon footprint of academia has become a pressing concern and an emerging research area, with a particular focus on greenhouse gas emissions from research travels. Mitigation strategies often revolve around encouraging virtual communication and adopting more sustainable transportation modes over short distances. However, these approaches are rarely subjected to rigorous quantitative [...]
Published: 2023-10-02
Subjects: Glaciology, Hydrology
At high elevations on the Greenland ice sheet meltwater percolates and refreezes in place, and hence does not contribute to mass loss. However, meltwater generation and associated surface runoff is occurring from increasingly higher altitudes, causing changes in firn stratigraphy that have led to the presence of near-surface ice slabs. These ice slabs force meltwater to flow laterally instead of [...]