Synthesis of Directional Wave Packets from Shot Records
Sign Up to like & getrecommendations! Published in 2019 at "Pure and Applied Geophysics"
DOI: 10.1007/s00024-019-02208-1
Abstract: Using directional waves is advantageous in subsurface seismic imaging because such waves are localized in space and time. Hence, the recorded data contain information mostly about the illuminated targets. However, most seismic field data are… read more here.
Keywords: wave packet; shot records; directional wave; point sources ... See more keywords
AOX contamination in Hangzhou Bay, China: Levels, distribution and point sources.
Sign Up to like & getrecommendations! Published in 2018 at "Environmental pollution"
DOI: 10.1016/j.envpol.2017.12.089
Abstract: The parameter AOX (adsorbable organic halogens) indicates the total amount of organic halogens in an environment. Seawater and surface sediment samples from 12 sample sites in the Hangzhou Bay (HZB), China, were analyzed for AOX… read more here.
Keywords: hangzhou bay; point sources; contamination; china ... See more keywords
Multi-scale Modeling of Nutrient Pollution in the Rivers of China
Sign Up to like & getrecommendations! Published in 2019 at "Environmental Science & Technology"
DOI: 10.1021/acs.est.8b07352
Abstract: Chinese surface waters are severely polluted by nutrients. This study addresses three challenges in nutrient modeling for rivers in China: (1) difficulties in transferring modeling results across biophysical and administrative scales, (2) poor representation of… read more here.
Keywords: pollution; point sources; multi scale; scale modeling ... See more keywords
Point source detection with fully convolutional networks
Sign Up to like & getrecommendations! Published in 2021 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201937171
Abstract: Context. Point sources are one of the main contaminants to the recovery of the cosmic microwave background signal at small scales, and their careful detection will be important for the next generation of cosmic microwave… read more here.
Keywords: cosmic microwave; detection; point sources; point source ... See more keywords
Strong methane point sources contribute a disproportionate fraction of total emissions across multiple basins in the United States
Sign Up to like & getrecommendations! Published in 2022 at "Proceedings of the National Academy of Sciences of the United States of America"
DOI: 10.1073/pnas.2202338119
Abstract: Significance Large methane point sources exist across multiple source sectors (e.g., oil, gas, coal, livestock, waste). Lacking is a robust assessment of the relative contribution of strong methane point sources against total or regional budgets,… read more here.
Keywords: methane point; point sources; across multiple; methane ... See more keywords
Nonparametric Estimation of Galaxy Cluster Emissivity and Detection of Point Sources in Astrophysics With Two Lasso Penalties
Sign Up to like & getrecommendations! Published in 2020 at "Journal of the American Statistical Association"
DOI: 10.1080/01621459.2020.1796676
Abstract: Abstract Astrophysicists are interested in recovering the three-dimensional gas emissivity of a galaxy cluster from a two-dimensional telescope image. Blurring and point sources make this inverse problem harder to solve. The conventional approach requires in… read more here.
Keywords: emissivity; point sources; galaxy cluster; astrophysics ... See more keywords
Uniqueness in phaseless inverse scattering problems with known superposition of incident point sources
Sign Up to like & getrecommendations! Published in 2019 at "Inverse Problems"
DOI: 10.1088/1361-6420/ab3373
Abstract: This paper is concerned with the uniqueness in inverse acoustic scattering problems with the modulus of the far-field patterns co-produced by the obstacle (resp. medium) and the point sources. Based on the superposition of point… read more here.
Keywords: point sources; incident; point; scattering problems ... See more keywords
Reconstruction of sources from time domain scattered waves at sparse sensors
Sign Up to like & getrecommendations! Published in 2021 at "Inverse Problems"
DOI: 10.1088/1361-6420/ac008e
Abstract: We consider the source reconstruction from the time domain scattered waves at sparse sensors. We show that the smallest annular hull containing the unknown source can be uniquely determined by the scattered field at a… read more here.
Keywords: sparse sensors; point sources; time domain; domain scattered ... See more keywords
Identification of acoustic point sources in a two-layered medium from multi-frequency sparse far field patterns
Sign Up to like & getrecommendations! Published in 2023 at "Inverse Problems"
DOI: 10.1088/1361-6420/accaa0
Abstract: We consider the reconstruction of point sources in a two layered medium from the multi-frequency sparse far field patterns taken on the upper half sphere. The point sources are located in both the upper half… read more here.
Keywords: point sources; field patterns; multi frequency; far field ... See more keywords
A consistent implementation of point sources on finite-difference grids
Sign Up to like & getrecommendations! Published in 2020 at "Geophysical Journal International"
DOI: 10.1093/gji/ggaa383
Abstract: We present a method to position point sources at arbitrary locations on finite-difference (FD) grids. We show that implementing point sources on single nodes can cause considerable errors when modelling with the FD method. In… read more here.
Keywords: source; point sources; difference grids; point ... See more keywords
Characterizing the expected behavior of non-Poissonian template fitting
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review D"
DOI: 10.1103/physrevd.107.103014
Abstract: We have performed a systematic study of the statistical behavior of non-Poissonian template fitting (NPTF), a method designed to analyze and characterize unresolved point sources in general counts datasets. In this paper, we focus on… read more here.
Keywords: point sources; behavior non; template fitting; poissonian template ... See more keywords