Preprints
Filtering by Subject: Physical Sciences and Mathematics
A late response of the sea-ice cover to Neoglacial cooling in the western Barents Sea
Published: 2023-11-09
Subjects: Physical Sciences and Mathematics
In high northern latitudes, the Middle to Late Holocene was a time of orbitally-induced atmospheric cooling. This led to increased sea-ice production in the Arctic Ocean and its export southward, a decrease in sea surface temperatures (SST), and glacier advances at least since 5-4 ka BP. However, the response of the ocean-climate system to decreasing insolation was not uniform. Our research shows [...]
Groundwater Ages in Intertill and Buried Valley Aquifers in Saskatchewan, Canada
Published: 2023-11-08
Subjects: Physical Sciences and Mathematics
Continental glaciations during the Pleistocene Epoch created complex systems of aquifers and aquitards across many northern regions of the Earth. The low hydraulic conductivities of glacial till aquitards suggest that limited recharge will reach the underlying aquifers, potentially preserving old groundwaters. Here, we characterize the recharge history in intertill and buried valley aquifers in [...]
Impact of altimeter-buoy data pairing methods on the validation of Sentinel-3A coastal significant wave heights
Published: 2023-11-07
Subjects: Physical Sciences and Mathematics
Sea state information is critical for a broad range of human activities (e.g. shipping, marine energy, marine engineering) most of them being concentrated along the coastal zone. Satellite altimeter records of significant wave heights (SWH) represent the largest source of sea state observations available to date. However, the quality of altimeter observations is reduced in the coastal zone due to [...]
Transgression–regression cycles drive correlations in Ediacaran–Cambrian rock and fossil records
Published: 2023-11-07
Subjects: Earth Sciences, Geology, Paleontology, Physical Sciences and Mathematics, Sedimentology, Statistical Methodology, Statistics and Probability, Stratigraphy
Strata of the Ediacaran Period (635–538.8 Ma) yield the oldest known fossils of complex, macroscopic organisms in the geologic record. These “Ediacaran-type” macrofossils (known as the Ediacaran biota) first appear in mid-Ediacaran strata, experience an apparent decline through the terminal Ediacaran, and directly precede the Cambrian (538.8–485.4 Ma) radiation of animals. Existing hypotheses for [...]
Deep Learning for Deep Earthquakes: Insights from OBS Observations of the Tonga Subduction Zone
Published: 2023-11-06
Subjects: Earth Sciences, Geophysics and Seismology, Physical Sciences and Mathematics
Applications of machine learning in seismology have greatly improved our capability of detecting earthquakes in large seismic data archives. Most of these efforts have been focused on continental shallow earthquakes, but here we introduce an integrated deep-learning-based workflow to detect deep earthquakes recorded by a temporary array of ocean-bottom seismographs (OBSs) and land-based stations [...]
Warm Arctic-Cold Eurasia Pattern Driven by Atmospheric Blocking in Models and Observations
Published: 2023-11-04
Subjects: Climate, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics
Microphysical evolution in mixed-phase mid-latitude marine cold-air outbreaks
Published: 2023-11-03
Subjects: Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics
Five cold-air outbreaks are investigated with aircraft offshore of continental northeast American. Flight paths aligned with the cloud-layer flow span cloud-top temperatures of -5 to -12 0C, in situ liquid water paths of up to 600 g m-2, while in situ cloud droplet number concentrations exceeding 500 cm-3 maintain effective radii below 10 micron. Ice is usually present at cloud initiation. [...]
Paleogeography and 3D variability of a dynamically uplifted shelf: observations from seismic stratigraphy of the Paleocene East Shetland Platform
Published: 2023-11-03
Subjects: Physical Sciences and Mathematics
In the Paleocene North Sea, pulses in turbidite fan deposition and shelfal progradation have been correlated to episodes of regional uplift caused by a precursor of the Icelandic Plume. However, in the East Shetland Platform, the specific impacts of dynamic uplift on the regional paleogeographic evolution are less understood. Using new, high resolution 3D seismic data from an underexplored [...]
WITHDRAWN: Magma as a generator of plasma and thermonuclear reactions in the bowels of the Earth?
Published: 2023-11-02
Subjects: Education, Engineering, Physical Sciences and Mathematics
Abstract removed when submission was withdrawn.
WITHDRAWN: Seismology for Dummies
Published: 2023-11-02
Subjects: Education, Engineering, Physical Sciences and Mathematics
Abstract removed when submission was withdrawn.
Excited state lifetime of electron trapping centres in alkali feldspars
Published: 2023-11-02
Subjects: Earth Sciences, Mineral Physics, Other Earth Sciences, Physical Sciences and Mathematics, Physics
The development of the infrared photoluminescence (IRPL) signal enables the direct non-destructive probing of the trapped electron population in feldspars. Whilst IRPL offers new perspectives for luminescence dating, it also enables detailed, site-selective measurements of the dosimetric defects emitting IRPL at 880 nm (IRPL880) and 955 nm (IRPL955), allowing improved understanding of [...]
Sounding out the river: Seismic and hydroacoustic monitoring of bedload transport in an alluvial river
Published: 2023-11-02
Subjects: Earth Sciences, Environmental Sciences, Physical Sciences and Mathematics
Seismological observations provide a non-invasive and continuous means of indirect measurement of fluvial bedload transport (i.e. the transport of coarse granular material, as a function of water depth, in rivers). However, a significant challenge remains in independently characterising the seismic signature of bedload transport from other sources, such as turbulence. Previous research suggested [...]
PyIRoGlass: An Open-Source, Bayesian MCMC Algorithm for Fitting Baselines to FTIR Spectra of Basaltic-Andesitic Glasses
Published: 2023-11-02
Subjects: Earth Sciences, Geochemistry, Other Earth Sciences, Physical Sciences and Mathematics, Volcanology
Quantifying volatile concentrations in magmas is critical for understanding magma storage, phase equilibria, and eruption processes. We present PyIRoGlass, an open-source Python package for quantifying H2O and CO2 species concentrations in the transmission FTIR spectra of basaltic to andesitic glasses. We leverage a database of naturally degassed melt inclusions and back-arc basin basalts to [...]
WITHDRAWN: Earthquakes and Other Seismic Processes as Part of Impact Theory
Published: 2023-11-01
Subjects: Education, Engineering, Physical Sciences and Mathematics
Abstract removed when submission was withdrawn.
WITHDRAWN: The Energy of Earthquakes. What's Wrong with the Elastic Recoil Theory?
Published: 2023-11-01
Subjects: Education, Engineering, Physical Sciences and Mathematics
Abstract removed when submission was withdrawn.