Divergent Geochemical Pathways of Carbonate Aquifer Evolution in a Classic Karst Terrain: (2) Groundwater Source Delineation Using Regional Water Chemistry Data DOI Open Access
Sarah Burgess,

Tracy D. Branam,

Lee J. Florea

et al.

Water, Journal Year: 2023, Volume and Issue: 15(19), P. 3436 - 3436

Published: Sept. 29, 2023

Springs provide ideal monitoring points for groundwater chemistry, which are important managing resources. The chemistry of these spring waters aggregate geochemical reactions along the flow path. In this paper, part two a two-part investigation, 104 perennial springs in classic karst landscape Mitchell Plateau, Indiana, USA were sampled at base flow. Many historically domestic, agricultural, commercial, and recreational use. Multifactor analysis field measurements, principal ions, stable isotopes revealed five primary clusters emerging from Aquifer. Two represented earth-alkaline-type that discriminated by temperature inorganic carbon concentration. other comprised mineralized alkaline-earth-type with excess alkalis elevated sulfate. fifth cluster appeared to be included meteoric sources. Using longitudinal data over years one mixing lines used describe set. pointed sources sulfur deep brines evaporite dissolution. Collectively, regional allow better delineation water types differentiation between Upper Lower

Language: Английский

A comprehensive evaluation of OPTICS, GMM and K-means clustering methodologies for geochemical anomaly detection connected with sample catchment basins DOI

Mahsa Hajihosseinlou,

Abbas Maghsoudi, Reza Ghezelbash

et al.

Geochemistry, Journal Year: 2024, Volume and Issue: 84(2), P. 126094 - 126094

Published: Feb. 23, 2024

Language: Английский

Citations

29
The control of karst rocky desertification has enhanced the carbon sequestration capacity of the ecosystem in southern China DOI
Chaochao Du, Xiaoyong Bai, Yangbing Li

et al.

Global and Planetary Change, Journal Year: 2024, Volume and Issue: unknown, P. 104602 - 104602

Published: Oct. 1, 2024

Language: Английский

Citations

10
A daily gap-free normalized difference vegetation index dataset from 1981 to 2023 in China DOI Creative Commons
Huiwen Li, Yue Cao, Jingfeng Xiao

et al.

Scientific Data, Journal Year: 2024, Volume and Issue: 11(1)

Published: May 22, 2024

Long-term, daily, and gap-free Normalized Difference Vegetation Index (NDVI) is of great significance for a better Earth system observation. However, gaps contamination are quite severe in current daily NDVI datasets. This study developed 0.05° dataset from 1981-2023 China by combining valid data identification spatiotemporal sequence gap-filling techniques based on the National Oceanic Atmospheric Administration dataset. The generated more than 99.91% area showed an absolute percent bias (|PB|) smaller 1% compared with original data, overall R2 root mean square error (RMSE) 0.79 0.05, respectively. PB RMSE between our MODIS gap-filled (MCD19A3CMG) during 2000 to 2023 7.54% 0.1, three monthly datasets (i.e., GIMMS3g, MOD13C2, SPOT/PROBA) only -5.79%, 4.82%, 2.66%, To best knowledge, this first long-term far.

Language: Английский

Citations

9
A review on radionuclide pollution in global soils with environmental and health hazards evaluation DOI

Krishno Chandra,

Ram Proshad, Hridoy Chandra Dey

et al.

Environmental Geochemistry and Health, Journal Year: 2023, Volume and Issue: 45(12), P. 9245 - 9266

Published: Aug. 14, 2023

Language: Английский

Citations

16
RETRACTED: Effects of glass fiber on recycled fly ash and basalt powder based geopolymer concrete DOI Creative Commons
Ali İhsan Çeli̇k, Yasin Onuralp Özkılıç, Alireza Bahrami

et al.

Case Studies in Construction Materials, Journal Year: 2023, Volume and Issue: 19, P. e02659 - e02659

Published: Nov. 7, 2023

This experimental study encompasses a comprehensive exploration of multiple parameters aiming to enhance the strength, workability, setting time, and environmental attributes geopolymer concrete (GPC). A pivotal solution lies in substituting fly ash with waste basalt powder, not only reducing binder costs but also ameliorating overall ecological footprint. secondary significant factor entails integration trimmed glass fibers. Throughout experimentation process, predominant underwent substitution powder at proportions 25%, 50%, 75%. The mixtures were augmented fibers 3 mm, 6 12 mm lengths, introduced ratios 0.5%, 1%, 2%, 3%. Following this, acquired samples subjected 24-hour curing regimen an 85°C oven. Subsequently, after 7-day period exposure external conditions post-incubation, these tested encompassing both compressive flexural strength tests. Samples incorporating ratio 50% showcased highest capacities, contrasting reduced capacities when was elevated Conversely, utilizing NaOH molarity M demonstrated superior performance. Impressively, compression exceeding 40 MPa achieved amalgamation additive. However, workability experienced notable reduction fiber 2% Molarity concentrations did impede slump, or time. consistent time hours attained, desired without need for superplasticizer. For achieving optimal triad while maximizing advantages GPC concrete, recommendation is incorporate distinct combination comprising 1-2% (with length), NaOH, into mixture formulation.

Language: Английский

Citations

15
Carbon potential of China's Grain to Green Program and its contribution to the carbon target DOI
Yinqiu Ma, Lin Huang, Jiahui Li

et al.

Resources Conservation and Recycling, Journal Year: 2023, Volume and Issue: 200, P. 107272 - 107272

Published: Nov. 17, 2023

Language: Английский

Citations

13
Using multivariate statistics to link major ion chemistry changes at karst springs to agriculture DOI
Patricia Spellman, Andrea Pain, Charles Breithaupt

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 921, P. 170573 - 170573

Published: Feb. 1, 2024

Language: Английский

Citations

5
Evaluation of heavy metals contamination in cereals, vegetables and fruits with probabilistic health hazard in a highly polluted megacity DOI
Ram Proshad, Abubakr M. Idris

Environmental Science and Pollution Research, Journal Year: 2023, Volume and Issue: 30(32), P. 79525 - 79550

Published: June 8, 2023

Language: Английский

Citations

13
Whether the enhanced terrestrial vegetation carbon sink affect the water resources in the middle-low latitude karst areas of China? DOI

Hezhen Lou,

Shengtian Yang, Xuewei Shi

et al.

Journal of Hydrology, Journal Year: 2023, Volume and Issue: 620, P. 129510 - 129510

Published: April 11, 2023

Language: Английский

Citations

12
Machine-Learning-Based Lithosphere-Atmosphere-Ionosphere Coupling Associated with Mw > 6 Earthquakes in America DOI Creative Commons
Munawar Shah,

Rasim Shahzad,

Punyawi Jamjareegulgarn

et al.

Atmosphere, Journal Year: 2023, Volume and Issue: 14(8), P. 1236 - 1236

Published: July 31, 2023

The identification of atmospheric and ionospheric variations through multiple remote sensing global navigation satellite systems (GNSSs) has contributed substantially to the development lithosphere-atmosphere-ionosphere coupling (LAIC) phenomenon over earthquake (EQ) epicenters. This study presents an approach for investigating Petrolia EQ (Mw 6.2; dated 20 December 2021) Monte Cristo Range 6.5; 15 May 2020) several parameters observe precursory signals various natures. These include Land Surface Temperature (LST), Air (AT), Relative Humidity (RH), Pressure (AP), Outgoing Longwave Radiations (OLRs), vertical Total Electron Content (TEC), these are used contribute LAIC in temporal window 30 days before after main shock. We observed a sharp increase LST both daytime nighttime EQ, but only enhancement within 3–7 Similarly, negative peak was RH along with increment OLR 5–7 prior impending EQs. Furthermore, also exhibited synchronized variation other parameters, no such co-located anomalies were EQ. applied machine learning (ML) methods confirm abrupt as further aid certain efforts order forecast EQs future. ML make prominent different data.

Language: Английский

Citations

11