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Preprints

There are 5432 Preprints listed.

Do slow slip earthquakes inhibit catastrophes? Geologic evidence from the Guerrero segment, Mexican subduction zone

Maria Teresa Ramirez Herrera, Jan Cerny, Nestor Corona, et al.

Published: 2023-05-12
Subjects: Physical Sciences and Mathematics

Globally, the largest tsunamigenic earthquakes have occurred along subduction zones. The Mw>9 devasting events in Chile, Sumatra, and Japan struck in areas where no instrumental records reported similar events. The one-thousand kilometer-long Mexican subduction zone (MSZ), where the Rivera-Cocos plates subduct under the North American plate, has no records of events of such magnitude. Historical [...]

Different mechanisms of Arctic first-year sea-ice ridge consolidation observed during the MOSAiC expedition

Evgenii Salganik, Benjamin Allen Lange, Polona Itkin, et al.

Published: 2023-05-10
Subjects: Earth Sciences, Glaciology, Oceanography, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics

Sea-ice ridges constitute a large fraction of the ice volume in the Arctic Ocean, yet we know little about the evolution of these ice masses. Here we examine the thermal and morphological evolution of an Arctic first-year sea-ice ridge, from its formation to advanced melt. Initially the mean keel depth was 5.6 m and mean sail height was 0.7 m. The initial rubble macroporosity (fraction of [...]

Glacial Isostatic Adjustment reduces past and future Arctic subsea permafrost

Roger Cameron Creel, Frederieke Miesner, Stiig Wilkenskjeld, et al.

Published: 2023-05-10
Subjects: Physical Sciences and Mathematics

Sea-level rise submerges terrestrial permafrost in the Arctic, turning it into subsea permafrost. Subsea permafrost underlies ∼1.8 million km^2 of Arctic continental shelf, with thicknesses in places exceeding 700 m. Sea-level variations over glacial-interglacial cycles control subsea permafrost distribution and thickness, yet no permafrost model has accounted for glacial isostatic adjustment [...]

National-scale, remotely sensed lake trophic state, 1984-2020

Michael Frederick Meyer, Simon Topp, Tyler V King, et al.

Published: 2023-05-10
Subjects: Biology, Life Sciences, Terrestrial and Aquatic Ecology

Lake trophic state is a key ecosystem property that integrates a lake’s physical, chemical, and biological processes. Despite the importance of trophic state as a gauge of lake water quality, standardized and machine-readable observations are uncommon. Remote sensing presents an opportunity to detect and analyze lake trophic state with reproducible, robust methods across time and space. We used [...]

Technology cannot fix this: To stay within planetary boundaries, plastic growth must be tackled

Patricia Villarrubia-Gómez, Bethanie Carney Almroth, Kristian Syberg, et al.

Published: 2023-05-10
Subjects: Education

In this Matters Arising, we respond to a recent article by Bachmann et al.1 We argue that dealing with plastics pollution as a novel entity within the planetary boundaries framework needs to consider the entirety of the plastics life cycle, from resource extraction to impacts on earth system processes. Singling out LCA quantifications to set a boundary for recycling plastics is not only an [...]

Ice flow model emulator based on physics-informed deep learning

Guillaume Jouvet, Guillaume Cordonnier

Published: 2023-05-08
Subjects: Glaciology

Convolutional Neural Networks (CNN) trained from high-order ice flow model realizations have proven to be outstanding emulators in terms of fidelity and computational performance. However, the dependence on an ensemble of realizations of an instructor model renders this strategy difficult to generalize to a variety of ice flow regimes found in the nature. To overcome this issue, we adopt the [...]

Environmental controls on the brGDGT and brGMGT distributions across the Seine River basin (NW France): Implications for bacterial tetraethers as a proxy for riverine runoff

Zhe-Xuan Zhang, Edith Parlanti, Christelle Anquetil, et al.

Published: 2023-05-07
Subjects: Biogeochemistry, Earth Sciences, Environmental Sciences

Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are bacterial lipids that have been largely used as environmental proxies in continental paleorecords. Another group of related lipids, branched glycerol monoalkyl glycerol tetraethers (brGMGTs), has recently been proposed as a potential paleotemperature proxy. Nevertheless, the sources and environmental dependencies of both brGDGTs and [...]

Slip-stuck kinematics of fault surfaces in laboratory experiments: implications for heterogeneous slip distributions during earthquake events

Uddalak Biswas, Manaska Mukhopadhyay, Nibir Mandal

Published: 2023-05-05
Subjects: Earth Sciences, Geophysics and Seismology, Physical Sciences and Mathematics, Tectonics and Structure

Combining field observations with analogue laboratory experiments, this study aims to use surface-roughness characteristics as an indicator of the heterogeneous slip partitioning along shear surfaces. We investigated the roughness of shear surfaces in sheared quartzite of the Singhbhum Shear Zone, eastern India, and identified two distinct kinematic domains: slip zone and stuck zone, marked by [...]

Subsurface storage capacity in underexplored sedimentary basins: Hydrogen and carbon dioxide storage on the Irish Atlantic margin

Conor O'Sullivan, Pablo Rodriguez-Salgado, Conrad Childs, et al.

Published: 2023-05-05
Subjects: Physical Sciences and Mathematics

As Ireland looks westwards to its Atlantic coastline to develop its renewable energy ambitions, offshore sedimentary basins on the Irish Atlantic margin offer significant potential for either collaborative energy (e.g. hydrogen, H2) or carbon dioxide (CO2) storage. Methodologies for subsurface storage assessment developed for basins with dense data coverage are typically less applicable to [...]

The complex role of local governance in facilitating property buyouts and managed retreat in response to climate hazards

Jonathon Loos

Published: 2023-05-04
Subjects: Environmental Studies

Managed retreat is an increasingly important management option for responding to the localized impacts of climate change and poses a complex governance challenge. Floodplain property buyouts represent the largest form of managed retreat currently underway in the U.S. and have been broadly studied as disaster response policy using large national datasets. Research on the local governance [...]

Spatial optimality and temporal variability in Australia's wind resource

Andrew Gunn, Roger Dargaville, Christian Jakob, et al.

Published: 2023-05-04
Subjects: Climate, Natural Resources Management and Policy

To meet electricity demand using renewable energy supply, wind farm locations should be chosen to minimise variability in output, especially at night when solar photovoltaics cannot be relied upon. Wind farm location must balance grid-proximity, resource potential, and wind correlation between farms. A top-down planning approach for farm locations can mitigate demand unmet by wind supply, yet the [...]

Tracing isotope precipitation patterns across Mexico

Ricardo Sanchez-Murillo, Luis González-Hita, Miguel Mejía-González, et al.

Published: 2023-05-04
Subjects: Earth Sciences, Environmental Sciences

Mexico encompasses a large spectrum of landscapes with topographic, geographic, and climatic factors interacting in a complex ecohydrological setting. For decades, isotope hydrogeological tools have been applied in Mexico using short-term or seasonal local meteoric water lines as valid input functions. Yet, a systematic evaluation of meteoric isotope characteristics is still lacking. Here we [...]

Agrivoltaic systems potentials in Sweden: a geospatial-assisted multi-criteria analysis

Mohamed Elkadeem, Sebastian Zainali, Silvia Ma Lu, et al.

Published: 2023-05-04
Subjects: Power and Energy

Agrivoltaic systems represent an intelligent solution combining electricity production from solar photovoltaic technology with agricultural production and avoiding land use conflicts. Geographic Information System technologies can support the implementation and spread of agrivoltaic systems by identifying the most suitable areas using useful spatially explicit information concerning [...]

Geophysical and Geochemical Constraints on Magma Storage Depths along the Cascade Arc: Knowns and Unknowns

Penny E Wieser, Adam Kent, Christy Till, et al.

Published: 2023-05-03
Subjects: Earth Sciences, Geology, Physical Sciences and Mathematics, Volcanology

The iconic volcanoes of the Cascade arc stretch from Lassen Volcanic Center in northern California, through Oregon and Washington, to the Garibaldi Volcanic Belt in British Columbia. Recent studies have reviewed differences in the distribution and eruptive volumes of vents, as well as variations in geochemical compositions and heat flux along strike (amongst other characteristics). We investigate [...]

Lateral Heterogeneity Analysis Using Multiwell ZVSP Unsupervised Machine Learning Classification

Fahdi Maula

Published: 2023-05-03
Subjects: Geophysics and Seismology

In 3D and 2D surface seismic interpretation, seismic waveform shapes and attributes can identify facies and reservoir parameters laterally with more details than traditional amplitude mapping. Herein, a method on 1D zero offset VSP (ZVSP) data was adapted, giving a unique perspective of lateral heterogeneity analysis using VSP seismic waveform shapes and attributes. The downgoing wavefield of VSP [...]

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