Preprints

Filtering by Subject: Other Engineering

Optimizing Crop Cut Collection for Determining Field-Scale Yields in an Insurance Context

Ritvik Sahajpal, Inbal Becker-Reshef, Sylvain Coutu

Published: 2020-11-10
Subjects: Geographic Information Sciences, Geography, Other Engineering, Remote Sensing, Spatial Science

Accurately determining crop yields at field-scale can help farmers estimate their net profit, enable insurance companies to ascertain payouts, and when aggregated at regional and national scales, crop yield estimates are critical in ensuring food security. Over the last few decades, crop cuts have been widely used to estimate field-scale crop yields. Crop cuts, while cost prohibitive, are the [...]

A general expression for wave-induced sediment bypassing of an isolated headland

Robert Jak McCarroll, Gerd Masselink, Nieves G. Valiente, Erin V. King, Timothy Scott, Christopher Stokes, Mark Wiggins

Published: 2020-07-20
Subjects: Earth Sciences, Engineering, Geomorphology, Oceanography, Oceanography and Atmospheric Sciences and Meteorology, Other Engineering, Physical Sciences and Mathematics

Accurate knowledge of the sediment budget of a coastal cell is necessary for coastal management and predicting long-term coastal change. An important component in the sediment budget of many wave-dominated embayed coastlines is the amount of sediment that bypasses rocky headlands, which present partial barriers to alongshore transport. Despite a recent surge in research interest in headland [...]

Formation Susceptibility to Wellbore Instability and Sand Production in the Hajdúszoboszló field, Pannonian Basin: Hungary

Oladoyin Kolawole

Published: 2020-07-06
Subjects: Engineering, Mining Engineering, Other Engineering

Wellbore instability and formation sand production pose potential risks for wellbore drilling, completion and production operations. In many sandstone reservoirs worldwide, sand production has been observed to accompany oil and gas production. In this study, we estimate, predict and quantify wellbore instability and sand production potentials in the Hajdúszoboszló field, Pannonian Basin, Hungary, [...]

A novel rules-based shoreface translation model for predicting future coastal change: ShoreTrans

Robert Jak McCarroll, Gerd Masselink, Nieves G. Valiente, Timothy Scott, Mark Wiggins, Josie-Alice Kirby, Mark Davidson

Published: 2020-06-05
Subjects: Earth Sciences, Engineering, Geomorphology, Oceanography, Oceanography and Atmospheric Sciences and Meteorology, Other Engineering, Physical Sciences and Mathematics

Predicting change to global shorelines presents an increasing challenge as sea-level rise (SLR) accelerates. Many shoreline prediction models use variations of the ‘Bruun-rule’, failing to account for relevant processes and morphologic complexity. To address this, we introduce a simple rules-based model (ShoreTrans) designed for complex, real-world profiles that predicts change across a wide [...]

Interferometry with ALOS-2 full-aperture ScanSAR data

Cunren Liang, Eric Jameson Fielding

Published: 2020-04-14
Subjects: Aerospace Engineering, Civil and Environmental Engineering, Earth Sciences, Electrical and Computer Engineering, Engineering, Geology, Geophysics and Seismology, Glaciology, Mining Engineering, Other Engineering, Physical Sciences and Mathematics, Physics, Tectonics and Structure, Volcanology

Advanced Land Observing Satellite-2 (ALOS-2) is designed to routinely acquire both scanning synthetic aperture radar (ScanSAR) and stripmap data. In this paper, we present a special multiband bandpass filter (MBF) to remove azimuth nonoverlap spectra for the interferometric processing of ALOS-2 full-aperture ScanSAR product. As required by the MBF, we estimate the important ScanSAR system [...]

Single-blind test of airplane-based hyperspectral methane detection via controlled releases

Evan David Sherwin, Yuanlei Chen, Arvind P Ravikumar, Adam R. Brandt

Published: 2020-01-08
Subjects: Education, Engineering, Other Engineering

Methane leakage from point sources in the oil and gas industry is a major contributor to global greenhouse gas emissions. The vast majority of such emissions come from a small fraction of "super-emitting" sources which, once detected, can generally be fixed at relatively low cost. We evaluate the emission detection and quantification capabilities of Kairos Aerospace’s airplane-based hyperspectral [...]

E&P Business Transformation: Reserves – Technology – Information {RTI} Strategy

Srikanth Guruswamy

Published: 2019-08-06
Subjects: Engineering, Other Engineering

Reserves (R)– make and break E&P companies. Its value and reliability are THE most valuable asset. The reserves hopper – evolution from Resources to Reserves needs maximum management focus all over. Management stage-gates to reserves maturity are necessary and sufficient for good governance. Technology (T)– is a wide array of methods providing variable assessment of reserves. KPI of [...]

Information-theoretic Portfolio Decision Model for Optimal Flood Management

Matteo Convertino, Antonio Annis, Fernando Nardi

Published: 2019-06-27
Subjects: Civil and Environmental Engineering, Civil Engineering, Computational Engineering, Earth Sciences, Engineering, Environmental Engineering, Environmental Health and Protection, Environmental Sciences, Geomorphology, Hydraulic Engineering, Hydrology, Life Sciences, Natural Resources and Conservation, Natural Resources Management and Policy, Operations Research, Systems Engineering and Industrial Engineering, Other Civil and Environmental Engineering, Other Engineering, Other Environmental Sciences, Other Physical Sciences and Mathematics, Physical Sciences and Mathematics, Probability, Risk Analysis, Statistics and Probability, Sustainability, Systems Engineering, Water Resource Management

The increasing impact of flooding urges more effective flood management strategies to guarantee sustainable ecosystem development. Recent catastrophes underline the importance of avoiding local flood management, but characterizing large scale basin wide approaches for systemic flood risk management. Here we introduce an information-theoretic Portfolio Decision Model (iPDM) for the optimization of [...]

Quantifying natural delta variability using a multiple-point geostatistics prior uncertainty model

Céline Scheidt, Anjali M. Fernandes, Chris Paola, Jef Caers

Published: 2018-09-30
Subjects: Artificial Intelligence and Robotics, Civil and Environmental Engineering, Computer Sciences, Earth Sciences, Electrical and Computer Engineering, Engineering, Environmental Engineering, Geology, Geomorphology, Other Civil and Environmental Engineering, Other Engineering, Physical Sciences and Mathematics, Sedimentology, Stratigraphy, Theory and Algorithms

We address the question of quantifying uncertainty associated with autogenic pattern variability in a channelized transport system by means of a modern geostatistical method. This question has considerable relevance for practical subsurface applications as well, particularly those related to uncertainty quantification relying on Bayesian approaches. Specifically, we show how the autogenic [...]

Submarine salt dissolution in the Santos Basin, offshore Brazil

Clara Rosa Rodriguez, Christopher Aiden-Lee Jackson, Rebecca E. Bell, Atle Rotevatn, Malcolm Francis

Published: 2017-12-30
Subjects: Engineering, Other Engineering

Salt dissolution occurs when evaporite-dominated rocks come into contact with NaCl-undersaturated fluids. Salt dissolution can positivity and negatively impact hydrocarbon and mineral exploration, seismic imaging, drilling, and structural restorations in salt-bearing sedimentary basins. However, due to typically poor seismic imaging and a lack of borehole data, few studies have analysed the [...]

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