Preprints
There are 6976 Preprints listed.
Bridging Ancestral Knowledge and Ecosystem Science for Coastal Restoration in Latin America
Published: 2025-08-04
Subjects: Biodiversity, Biology, Cell and Developmental Biology, Ecology and Evolutionary Biology, Forest Sciences, Life Sciences, Marine Biology, Microbiology, Research Methods in Life Sciences, Systems Biology
Peer-review status: This manuscript has not been peer-reviewed. It is a preprint submitted for public dissemination and open feedback. This study documents the CALISUR methodology, a community-based mangrove restoration model rooted in ancestral ecological knowledge and applied across six intervention sites in the Gulf of Guayaquil. The methodology integrates scientific and traditional practices [...]
PhyX - Predicting Phytoplankton Community Composition from Satellite Ocean Color
Published: 2025-08-02
Subjects: Marine Biology
The way in which phytoplankton communities are structured - often referred to as phytoplankton community composition (PCC) - exerts fundamental control on ocean biogeochemical cycling, climate regulation, and marine ecosystem dynamics. Accurate quantification of these groups from satellite ocean color data remains challenging due to spectral similarities among phytoplankton types and the [...]
Artificial Intelligence in Earth Science: A GeoAI Perspective
Published: 2025-08-03
Subjects: Artificial Intelligence and Robotics, Computer Sciences, Earth Sciences, Engineering, Environmental Sciences, Physical Sciences and Mathematics
GeoAI, or geospatial artificial intelligence, has transformative potential for Earth science by integrating geospatial data with artificial intelligence to enhance environmental monitoring, predictive modeling, and decision-making. This commentary, based on the Greg Leptoukh Lecture at AGU 2024, explores the evolving role of GeoAI in addressing pressing challenges—from environmental change in the [...]
Natural Origins of 3I/ATLAS: Why 3I/ATLAS is Not an Alien Probe
Published: 2025-08-04
Subjects: Physical Sciences and Mathematics
A number of scientists have talked about the interstellar object 3I/ATLAS (C/2023 A3) since it was found in 2025. This is mostly because Dr. Avi Loeb thinks the object could be an alien probe because of its size, path, and chemical ambiguity. This work looks closely at Loeb's claims and gives a fresh astrogeological reason for them: Another group of scientists found that the lithified clastic [...]
Comparisons of tsunami inundation between homogeneous and heterogeneous earthquake sources at select sites for the Cascadia Subduction Zone.
Published: 2025-08-05
Subjects: Geophysics and Seismology
Tsunami hazard severity — especially tsunami inundation depth — is related to the tsunami’s source mechanism. Traditionally, homogeneous earthquake rupture sources have been used as the source mechanism for tsunamis generated in the Cascadia Subduction Zone for re- gional hazard assessment. We show with 200 heterogeneous earthquake rupture sources how tsunami inundation hazards change for three [...]
Reconstructing Jezero Crater’s Paleoenvironment: Insights from Perseverance Rover and Orbital Data
Published: 2025-08-05
Subjects: Earth Sciences, Physical Sciences and Mathematics, Planetary Sciences
Jezero Crater on Mars is a critical site for investigating ancient aqueous environments due to its preserved delta and lacustrine features. Reconstructing its paleoenvironmental history is essential for understanding Mars’ climate evolution and assessing its past habitability. This study integrates in-situ data from the Perseverance rover, including review for high-resolution imaging, [...]
A simple model for wind-driven ocean circulation in unbounded domains
Published: 2026-04-02
Subjects: Oceanography and Atmospheric Sciences and Meteorology
An idealized barotropic model satisfying a Stommel–type vorticity balance is formulated for wind–driven circulation in a zonally unbounded channel with spatially varying bottom drag, motivated by the Antarctic Circumpolar Current through Drake Passage. An explicit solution is obtained in the high–drag passage and a Sverdrup interior with western boundary layer is derived in the weak–drag basin; [...]
DASNordicSLR - Sea Level Projections for Northern Europe
Published: 2025-08-05
Subjects: Oceanography
Sea level rise is an inevitable consequence and one of the most significant threats posed by climate change, increasing the risk of flooding in low-lying areas along the German coast. Based on the IPCC 6th Assessment Report (AR6) projections we aim to deliver improved projections of relative sea level change for Northern Europe’s coastal regions. These projections are available as spatial data up [...]
On the Origin of Slow and Large Earthquakes in South-Central Mexico
Published: 2025-08-06
Subjects: Earth Sciences
Slow slip events (SSEs) in Guerrero and Oaxaca, Mexico, have likely triggered five of the last six M7+ earthquakes in the region since 2012. This interaction, however, is non-systematic, as evidenced by the preceding 17 years of large earthquake quiescence, when multiple SSEs occurred without consequence. The Mexican catalog since 1800 reveals that large earthquakes cluster in time every ~15 [...]
Subsurface Lithologic Controls on Off-Fault Deformation and Multi-Fault Slip During the 2016 Mw 6.5 Norcia Earthquake Revealed by Satellite Geodesy
Published: 2025-08-06
Subjects: Earth Sciences
Understanding the mechanisms controlling deformation localization is crucial for our understanding of fault mechanics and improving seismic hazard assessment, but has not been extensively studied for normal-faulting earthquakes. Here, we present a thorough analysis of the 2016 Mw 6.5 Norcia, Italy, earthquake using high-resolution satellite geodesy. We investigate the degree of deformation [...]
Climate driven hydrologic nonstationarity patterns across the Contiguous United States
Published: 2025-08-07
Subjects: Earth Sciences, Hydrology, Physical Sciences and Mathematics
We calculated metrics of climate change, land use-land cover change, and hydrologic nonstationarity in 671 catchments across the Contiguous United States (CONUS) that are known not to have relatively little urbanization and anthropogenic land cover. Climate change is correlated with hydrologic nonstationarity in these basins. Land use-land cover change has no correlation with hydrologic [...]
Prioritizing wildfire fuel management in California
Published: 2025-08-07
Subjects: Environmental Health and Protection, Environmental Sciences, Natural Resources Management and Policy, Physical Sciences and Mathematics
The resources available for managing wildfire risk are insufficient and ultimately finite, while the risk of catastrophic fires is enormous and growing. Prioritization of responses is thus critical, but the basis for comparing the costs and societal benefits of alternative investments in wildfire mitigation is inadequate. Here, we assess and compare the costs of landscape-scale fuel treatment in [...]
Comment on "Mineral-water reactions in Earth's mantle: Predictions from Born theory and ab initio molecular dynamics" by Fowler et al. 2024 (Geochim. Cosmochim. Acta 372, 111-123)
Published: 2025-08-07
Subjects: Physical Sciences and Mathematics, Physics
This comment addresses discrepancies in dielectric constant calculations of water under extreme conditions ( ~10 GPa and 1000 K) between Fowler et al.'s recent study [Geochim. Cosmochim. Acta 372, 111-123 (2024)] and the earlier work by Pan et al. [Proc. Natl. Acad. Sci. 110, 6646–6650 (2013)]. Through reproduced ab initio molecular dynamics (AIMD) simulations using the CP2K code with extended [...]
22 Years Later: Evaluating Glover & Smith’s 2003 Predictions of the 2025 Deep-Sea Ecosystem
Published: 2025-08-07
Subjects: Life Sciences, Marine Biology
Earth’s deep-sea ecosystem remains one of the least explored and understood ecosystems on the planet. Human interest in the resources available in the deep-sea must be balanced with potential harm to the deep-sea ecosystem. Accurately predicting the effect on human impact on the deep-sea floor can help guide policies and actions today. This research evaluates prior predictions of human impact on [...]
Analysis of geomagnetic secular variation for the last 1.5 Ma recorded by volcanic rocks of the Trans Mexican Volcanic Belt: new data from Sierra de Chichinautzin, Mexico
Published: 2025-08-08
Subjects: Earth Sciences, Geophysics and Seismology
The great wealth of volcanism along the Trans Mexican Volcanic Belt (TMVB) and the need to improve the secular variation curve of the Earth magnetic field of the region is the aim of this research. 300 oriented cores from 33 sites and 21 individual cooling units were acquired from Sierra de Chichinautzin volcanic field (ChVF) and Sierra de Santa Catarina (SSC). Directional analysis and rock [...]