Preprints

Filtering by Subject: Geomorphology

An ensemble neural network approach for space-time landslide predictive modelling

Jana Lim, Giorgio Santinelli, Ashok Dahal, et al.

Published: 2024-02-27
Subjects: Artificial Intelligence and Robotics, Geomorphology, Multivariate Analysis

There is an urgent need for accurate and effective Landslide Early Warning Systems (LEWS). Most LEWS are currently based on a single temporally-aggregated measure of rainfall derived from either in-situ measurements or satellite-based rainfall estimates. Relying on a summary metric of precipitation may not capture the complexity of the rainfall signal and its dynamics in space and time in [...]

Towards an Open and Integrated Cyberinfrastructure for River Morphology Research in the Big Data Era

Venkatesh Merwade, Ibrahim Demir, Marian Muste, et al.

Published: 2024-02-16
Subjects: Computer and Systems Architecture, Computer Engineering, Computer Sciences, Databases and Information Systems, Engineering, Environmental Education, Environmental Engineering, Geomorphology, Hydrology, Systems and Communications, Water Resource Management

The objective of this paper is to present the initial illustration of a cyberinfrastructure named the River MORPhology Information System (RIMORPHIS) that addresses the current limitations related to river morphology data and tools. A new specification for data and semantics on river morphology datasets has been developed to support the web-based platform for discovering and visualization of [...]

Reconstructing Quaternary sea-level through bayesian inversion of staircase coastal landscapes

Gino de Gelder, Navid Hedjazian, Laurent Husson, et al.

Published: 2024-02-10
Subjects: Earth Sciences, Geology, Geomorphology, Tectonics and Structure

Quantifying Quaternary sea-level changes and hydroclimatic conditions is an important challenge given their intricate relation with paleo-climate, ice-sheets and geodynamics. The world’s coastlines provide an enormous geomorphologic archive, from which forward landscape evolution modelling studies have shown their potential to unravel paleo sea-levels, albeit at the cost of assumptions to the [...]

WITHDRAWN: The potential of terrestrial and aquatic molluscs for the temporal analysis of Deckenschotter deposits and younger Quaternary sediments from the Swiss Plateau

Nigel Thew

Published: 2024-02-08
Subjects: Earth Sciences, Geology, Geomorphology, Paleobiology, Paleontology, Sedimentology, Stratigraphy

An updated landslide susceptibility model and a log-Gaussian Cox process extension for Scotland

Erin Kelly Bryce, Daniela Castro-Camilo, Claire Dashwood, et al.

Published: 2024-02-01
Subjects: Applied Statistics, Geomorphology

At the time of its development, GeoSure was created using expert knowledge based on a thorough understanding of the engineering geology of the rocks and soils of Great Britian. The ability to use a data-driven methodology to develop a national scale landslide susceptibility was not possible due to the relatively small size of the landslide inventory at the time. In the intervening 20 years the [...]

Facies models for rocky shorelines and their application to transgressed basement highs in the North Sea.

Josep Maria Puig Lopez, John Howell

Published: 2024-01-29
Subjects: Earth Sciences, Geology, Geomorphology, Sedimentology, Stratigraphy

Rocky shorelines form where basement highs are eroded and flooded during marine transgressive events. Despite the Mesozoic North Sea rift generated numerous platform margins and rotated fault blocks which acted as basement highs, rocky shoreline deposits have not been previously reported. In the rock record rocky shoreline deposits are usually represented by thin conglomerates overlying major [...]

River Floodplains, Organic Carbon, and Paleoclimate: How River Dynamics Impart Biases in the Biogeochemical Climate Record of Terrestrial Landscapes

Anjali M Fernandes, Michael T Hren, Virginia B. Smith, et al.

Published: 2024-01-29
Subjects: Earth Sciences, Geochemistry, Geomorphology, Hydrology, Physical Sciences and Mathematics, Sedimentology, Stratigraphy

River floodplains can be both sources and sinks for organic carbon. In the sedimentary record, geochemical signatures of terrestrial water availability record climate and ecology along river corridors in deep time. However, paleoenvironmental reconstructions are often confounded by the complex dynamics of organic carbon residence, entrainment, and deposition in a fluvial system. As alluvial [...]

Quaternary and Pliocene sea-level changes at Camarones, central Patagonia, Argentina

Karla Rubio-Sandoval, Deirdre D. Ryan, Sebastian Richiano, et al.

Published: 2024-01-20
Subjects: Earth Sciences, Geology, Geomorphology, Geophysics and Seismology, Tectonics and Structure

Geological indicators of past relative sea level changes are fundamental to reconstruct the extent of former ice sheet during past interglacials, which are considered analogs for future climate conditions. Four interglacials, dating from Holocene to Pliocene, have left sea-level imprints in the proximity of the coastal town of Camarones in Central Patagonia, Argentina. Sea-level index points were [...]

Assessing the Influence of Temperature on Slope Stability in a Temperate Climate: A Nationwide Spatial Probability Analysis in Italy

Marco Loche, Gianvito Scaringi

Published: 2024-01-18
Subjects: Geomorphology, Geotechnical Engineering, Multivariate Analysis

Among the factors controlling the stability of slopes, the role of temperature remains poorly understood, especially in temperate climates. Experiments reveal the coupled thermo-hydro-mechanical (THM) nature of clay behaviours; however, field evidence of thermally-induced landslides is scarce. The complexity of THM processes hinders the construction of a temperature-related variable, usable in [...]

PHOTOMOB: AUTOMATED GIS METHOD FOR ESTIMATION OF FRACTIONAL GRAIN DYNAMICS IN GRAVEL BED RIVERS. PART 1: GRAIN SIZE

Fanny Ville, Damià Vericat, Ramon J. Batalla, et al.

Published: 2023-12-06
Subjects: Earth Sciences, Environmental Monitoring, Geomorphology, Hydrology, Sedimentology, Water Resource Management

Particle entrainment intensity is spatially and temporally variable, making it a complex phenomenon to measure. This paper is the first of a pair, in which we present an automated image processing procedure (PhotoMOB) for monitoring the mobility/stability of gravel river beds. The method is based on local comparison of the shape of the grains identified at the same coordinates between successive [...]

PhotoMOB: Automated GIS method for estimation of fractional grain dynamics in gravel bed rivers. Part 2: Bed stability and fractional mobility

Fanny Ville, Damià Vericat, Ramon J. Batalla, et al.

Published: 2023-12-06
Subjects: Earth Sciences, Environmental Monitoring, Geomorphology, Hydrology, Sedimentology, Water Resource Management

Bed mobility and stability are spatially and temporally variable, making it a complex phenomenon to study. This paper is the second of a pair, in which we present an automated image processing procedure for monitoring the mobility/stability of gravel river beds. The method is based on local comparison of the shape of the grains identified at the same coordinates between successive photos to [...]

Observations of beach cusp morphodynamics on a composite beach

Sebastian Pitman, Giovanni Coco, Deirdre Hart, et al.

Published: 2023-11-02
Subjects: Geology, Geomorphology

Substantial volumes of sediment are moved on coarse grained beaches through the formation and destruction of beach cusps, yet the processes governing cusp behaviour remain poorly understood. Here, we combine continuous 2D LiDAR scan data with daily UAV topographic surveys and RGB imagery to provide detailed morphological measurements of beach cusps on a composite beach with the aim to investigate [...]

Fluvial reworking eliminates small craters, but does not meaningfully bias the Mars interbedded-crater record

Andrew Moodie, Timothy Goudge

Published: 2023-10-31
Subjects: Geomorphology, Planetary Geomorphology, Planetary Sedimentology, Sedimentology, Stratigraphy

Interpreting structures, morphology, and chemistry of the exposed stratigraphic record on Mars is complicated by ancient surface processes that variably removed parts of the record. Previous research has used the lack of smaller craters (<50 m diameter) interbedded with fluvial deposits to constrain atmospheric pressure when rivers were active on Mars; the notion being that higher atmospheric [...]

Pacific shoreline erosion and accretion patterns controlled by El Niño/Southern Oscillation

Kilian Vos, Mitchell Dean Harley, Ian L Turner, et al.

Published: 2023-10-27
Subjects: Civil and Environmental Engineering, Climate, Earth Sciences, Engineering, Environmental Monitoring, Environmental Sciences, Geomorphology, Oceanography, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics

In the Pacific Basin, the El Niño/Southern Oscillation (ENSO) is the dominant mode of interannual climate variability, driving substantial changes in oceanographic forcing and impacting Pacific coastlines. Yet, how sandy coasts respond to these basin-scale changes has to date been limited to a few long-term beach monitoring sites, predominantly on developed coasts. Here we use 38 years of Landsat [...]

Site selection of desert solar farms based on heterogeneous sand flux

Guoshuai Li, Lihai Tan, Bao Yang, et al.

Published: 2023-10-09
Subjects: Atmospheric Sciences, Environmental Indicators and Impact Assessment, Geomorphology, Risk Analysis

Site selection for building solar farms in deserts is crucial and must consider the dune threats associated with sand flux, such as sand burial and dust contamination. Understanding the changes in sand flux can optimize the site selection of desert solar farms. Here we use the ERA5-Land hourly wind data with 0.1°×0.1° resolution to calculate the yearly sand flux from 1950 to 2022. The mean of [...]

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