Results 31 to 40 of about 1,675 (179)

Variabilidade espacial de variáveis geobiofísicas nas nascentes da bacia hidrográfica do Ribeirão Santa Cruz Spatial variability of geobiophysical variables in the springs of the Ribeirão Santa Cruz watershed

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2008
Objetivou-se, em Lavras, MG, caracterizar a estrutura e a magnitude de dependência espacial de variáveis ambientais nas nascentes da bacia hidrográfica do Ribeirão Santa Cruz, por métodos de interpolação geoestatística.
Marcelo de C. Alves   +6 more
doaj   +1 more source

New 2010 Maule Aftershock Catalog Reveals Structure of the Deep Subduction Interface

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract On 27 February 2010, a Mw 8.8 earthquake occurred near Maule in south‐central Chile. The subsequent rapid deployment of a dense network of seismic stations on land was able to capture the first year of its aftershock sequence. Here, we revisit this data set using picking Artificial Intelligence tools, a 3D velocity model of the region and ...
C. Chalumeau, A. Rietbrock
wiley   +1 more source

Variogram analysis of stochastic processes

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2018
Properties of the semivariogram of an intrinsically stationary continuous-time random process with finite second moment are investigated. A necessary and sufficient conditions for a continuous function to be semivariogram are found.
Tatsiana V. Tsekhavaya
doaj  

Bayesian Inference of Fault Slip Heterogeneity and Overlap: Application to 2019 Ridgecrest Earthquakes and Afterslip

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Fault slip occurs in both seismic and aseismic styles with spatial variability across scales, yet non‐unique source inference limits our ability to resolve slip complexity and dynamics. Here we evaluate the effect of spatial smoothing regularization in Bayesian frameworks by comparing an unregularized (BUR) approach that samples distributed ...
Xiong Zhao, Junle Jiang
wiley   +1 more source

A Classification for a Geostatistical Index of Spatial Dependence

open access: yesRevista Brasileira de Ciência do Solo
: In geostatistical studies, spatial dependence can generally be described by means of the semivariogram or, in complementary form, with a single index followed by its categorization to classify the degree of such dependence.
Enio Júnior Seidel   +1 more
doaj   +1 more source

Uncertainty in Upscaling In Situ Soil Moisture Observations to Multiscale Pixel Estimations with Kriging at the Field Level

open access: yesISPRS International Journal of Geo-Information, 2018
Upscaling in situ soil moisture observations (ISMO) to multiscale pixel estimations with kriging is a key step in the comprehensive usage of ISMO and remote sensing (RS) soil moisture data. Scale effects occur and introduce uncertainties during upscaling
Xiaohu Zhang   +5 more
doaj   +1 more source

Spatial and Temporal Stability of Weed Patches in Cereal Fields under Direct Drilling and Harrow Tillage

open access: yesAgronomy, 2020
The adoption of conservation agriculture (CA) techniques by farmers is changing the dynamics of weed communities in cereal fields and so potentially their spatial distribution.
Jordi Izquierdo   +6 more
doaj   +1 more source

Plate Divergence at the Krafla Volcanic System, Iceland: Insight From GNSS Geodesy and Sentinel‐1 Satellite Radar Interferometry in 2002–2024

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract The Krafla volcanic system in Iceland, a subaerial segment of the divergent boundary between the North American and Eurasian plates, offers a unique opportunity to investigate volcano‐tectonic processes. We present a six‐segment kinematic back slip plate boundary model constrained jointly by long‐term deformation velocity fields from Global ...
Yilin Yang   +10 more
wiley   +1 more source

Study of the spatial variability of moisture and compaction in soils with different plant covers

open access: yesAgronomía Colombiana, 2016
Soil is a dynamic system, with physical, chemical and biological properties that have high spatial variability, making necessary to use innovative methodologies to study this variability.
Lida Paola Pinzón-Gómez   +2 more
doaj   +1 more source

Mycorrhizal legacy mediates seedling success following timber harvesting in Northeastern forests

open access: yesEcological Applications, Volume 36, Issue 5, July 2026.
Abstract Overstory trees rely on arbuscular mycorrhizal (AM) or ectomycorrhizal (EcM) fungi for establishment and growth. However, we know very little about how timber harvesting affects the biotic (e.g., mycorrhizal fungi) and abiotic (e.g., nutrient availability) legacies left behind by AM and EcM trees.
Amelia Fitch   +8 more
wiley   +1 more source

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