Top 5 Eartharxiv Papers Today


0.0 Mikeys
#1. Spatially distributed chaos and turbulence in clouds
Alexander Bershadskii
Spatially distributed chaos (turbulence) in the cumulus and stratiform clouds have been studied using results of direct numerical simulations and radiometric measurements in cloudy atmosphere. It is shown that in the both cases the second order moment of helicity distribution (the Levich-Tsinober invariant) dominates the kinetic energy spectra.
more | pdf
Figures
None.
Tweets
Github
None.
Youtube
None.
Other stats
Sample Sizes : None.
Authors: 1
Total Words: 0
Unqiue Words: 0

0.0 Mikeys
#2. Deglacial landforms and Holocene vegetation trajectories in the northern interior cedar-hemlock forests of British Columbia
Daniel Gavin, Ariana White, Paul Sanborn, Richard Hebda
The northern Rocky Mountain Trench of eastern British Columbia is a broad valley mantled by glaciolacustrine terraces supporting a complex mix of mesic-temperate (“interior wetbelt”) forests that are strongly affected by terrain and substrate. Neither the geomorphic history during early-Holocene deglaciation nor the vegetation history of the origin of the Tsuga heterophylla and Thuja plicata populations in the interior wetbelt forest is well understood. Sediment cores were obtained from two lakes, 10 km apart and occupying different terraces (83 m elevational difference) and compared to existing fire-history and paleoclimate reconstructions. Radiocarbon dates and a mapped terrain classification indicate the upper terrace formed as a lacustrine and glaciofluvial kame terrace hundreds of years prior to a lower terrace formed by glaciolacustrine sediments of a proglacial lake. The minimum limiting ages of these terraces correlate with dated jökulhlaup deposits of the Fraser River. The upper site’s first detectable pollen at > 11.0...
more | pdf
Figures
None.
Tweets
dan_gavin: You have heard of the Missoula floods....here is a bit of the mostly untold story of the Fraser River jökulhlaups...Deglacial landforms and Holocene vegetation trajectories in the northern interior cedar-hemlock forests of British Columbia https://t.co/fUxrXUmLVe via @OSFramework
Github
None.
Youtube
None.
Other stats
Sample Sizes : None.
Authors: 4
Total Words: 0
Unqiue Words: 0

0.0 Mikeys
#3. Pleistocene - Holocene volcanism at the Karkar geothermal prospect, Armenia
Khachatur Meliksetian, Iain Neill, Dan N. Barfod, Eilidh Milne, Emma Waters, Gevorg Navasardyan, Edmond Grigoryan, Valerie Olive, Nicholas Odling, Arkady Karakhanian
Pleistocene to Holocene volcanic centres north of the Bitlis-Zagros suture in Turkey, Iran, Armenia and Georgia represent both volcanic hazards and potential or actual geothermal energy resources. Such challenges and opportunities cannot be fully quantified without understanding these volcanoes’ petrogenesis, geochronology and magmatic, tectonic or other eruption triggers. We discuss the age and igneous geology of the Karkar monogenetic volcanic field in Syunik, SE Armenia. The ~30 km^2 field is beside the location of Armenia’s only geothermal energy test drilling site. Eruptions of fissure-fed trachybasaltic andesite to trachyandesite occurred on a trans-tensional pull-apart segment of the Pambak-Sevan-Syunik Fault and have previously been interpreted to be of Holocene age. We conducted high-resolution duplicate Ar/Ar dating of 7 groundmass separates, providing composite plateau or inverse isochron ages ranging from 6 ± 3 ka to 332 ± 9 ka (2σ). Each lava flow displays petrographic and geochemical patterns consistent with melting...
more | pdf
Figures
None.
Tweets
Github
None.
Youtube
None.
Other stats
Sample Sizes : None.
Authors: 10
Total Words: 0
Unqiue Words: 0

0.0 Mikeys
#4. Dynamics of displacement in mixed-wet porous media
Alessio Scanziani, Qingyang Lin, Abdulla Alhosani, Martin J. Blunt, Branko Bijeljic
We identify a distinct two-phase flow invasion pattern in a mixed-wet porous medium. Time-resolved high-resolution synchrotron X--ray imaging is used to study the invasion of water through a small rock sample filled with oil, characterized by a wide non-uniform distribution of local contact angles both above and below $90^{\circ}$. The water advances in a connected front, but throats are not invaded in decreasing order of size, as predicted by invasion percolation theory for uniformly hydrophobic systems. Instead, we observe pinning of the three-phase contact between the fluids and the solid, manifested as contact angle hysteresis, which prevents snap-off and interface retraction. In the absence of viscous dissipation, we use an energy balance to find an effective, thermodynamic, contact angle for displacement and show that this angle increases during the displacement. Displacement occurs when the local contact angles overcome the advancing contact angles at a pinned interface: it is wettability which controls the filling...
more | pdf
Figures
None.
Tweets
Github
None.
Youtube
None.
Other stats
Sample Sizes : None.
Authors: 5
Total Words: 0
Unqiue Words: 0

0.0 Mikeys
#5. Dilation of subglacial sediment governs incipient surge motion in glaciers with deformable beds
Brent Minchew, Colin R. Meyer
Glacier surges are quasi-periodic episodes of rapid ice flow that arise from increases in slip-rate at the ice-bed interface. The mechanisms that trigger and sustain surges are not well-understood. Here, we develop a new model of incipient surge motion for glaciers underlain by sediments to explore how surges may arise from slip instabilities within this thin layer of saturated, deforming subglacial till. Our model represents the evolution of internal friction, porosity, and pore water pressure within the sediments as functions of the rate and history of shearing. Changes in pore water pressure govern incipient surge motion, with less-permeable till facilitating surging because dilation-driven reductions in pore-water pressure slow the rate at which till tends toward a new steady state, thereby allowing time for the glacier to thin dynamically. The reduction of overburden pressure at the bed caused by dynamic thinning of the glacier sustains surge acceleration in our model. The need for changes in both the hydromechanical...
more | pdf
Figures
None.
Tweets
MITglaciology: Interested in surge mechanisms in glaciers with deformable beds? Then check out our (@MITglaciology and @colinrmeyer) new preprint in @EarthArXiv: Dilation of subglacial sediment governs incipient surge motion in glaciers with deformable beds https://t.co/CIyNcg8bin
Github
None.
Youtube
None.
Other stats
Sample Sizes : None.
Authors: 2
Total Words: 0
Unqiue Words: 0

About

Assert is a website where the best academic papers on arXiv (computer science, math, physics), bioRxiv (biology), BITSS (reproducibility), EarthArXiv (earth science), engrXiv (engineering), LawArXiv (law), PsyArXiv (psychology), SocArXiv (social science), and SportRxiv (sport research) bubble to the top each day.

Papers are scored (in real-time) based on how verifiable they are (as determined by their Github repos) and how interesting they are (based on Twitter).

To see top papers, follow us on twitter @assertpub_ (arXiv), @assert_pub (bioRxiv), and @assertpub_dev (everything else).

To see beautiful figures extracted from papers, follow us on Instagram.

Tracking 257,112 papers.

Search
Sort results based on if they are interesting or reproducible.
Interesting
Reproducible
Feedback
Online
Stats
Tracking 257,112 papers.