Search Results - "Okkonen, Jarkko"

Comparison of the AVI, modified SINTACS and GALDIT vulnerability methods under future climate-change scenarios for a shallow low-lying coastal aquifer in southern Finland by Luoma, Samrit, Okkonen, Jarkko, Korkka-Niemi, Kirsti

“…A shallow unconfined low-lying coastal aquifer in southern Finland surrounded by the Baltic Sea is vulnerable to changes in groundwater recharge, sea-level…”
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Forward and Adjoint Modeling of Sensitivities to Periodic Forcings in Groundwater Flow and Transport by Neupauer, Roseanna M., Turnadge, Chris, Okkonen, Jarkko

“…Sensitivity analysis requires the calculation of the sensitivity of a performance measure of model output to a model input. This work focuses on calculating…”
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Impacts of Future Climate Change and Baltic Sea Level Rise on Groundwater Recharge, Groundwater Levels, and Surface Leakage in the Hanko Aquifer in Southern Finland by Samrit Luoma, Jarkko Okkonen

“…The impact of climate change and Baltic Sea level rise on groundwater resources in a shallow, unconfined, low-lying coastal aquifer in Hanko, southern Finland,…”
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Predictive Insight into Tailings Flowability at Their Disposal Using Operating Data-Driven Artificial Neural Network (ANN) Technique by Nelson Herrera, Raul Mollehuara, María Sinche Gonzalez, Jarkko Okkonen

“…This study investigates the application of artificial neural networks (ANNs) in predicting the flowability of mining tailings based on operational variables…”
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Soft Computing Application in Mining, Mineral Processing and Metallurgy with an Approach to Using It in Mineral Waste Disposal by Nelson Herrera, María Sinche Gonzalez, Jarkko Okkonen, Raul Mollehuara

“…In the past two decades, the mining sector has increasingly embraced simulation and modelling techniques for decision-making processes. This adoption has…”
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Predicting Flowability at Disposal of Spent Heap Leach by Applying Artificial Neural Networks Based on Operational Variables by Nelson Herrera, María Sinche Gonzalez, Jarkko Okkonen, Raul Mollehuara Canales

“…The mining sector actively seeks to improve operational processes and manage residual materials, especially in areas used for heap leaching disposal. The…”
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Analyzing Groundwater Recharge and Vadose Zone Dynamics by Combining Soil Moisture and Groundwater Level Data with a Numerical Model in Subarctic Conditions by Tähtikarhu, Mika, Okkonen, Jarkko

“…AbstractQuantitative estimates on the magnitude and dynamics of vadose and groundwater zones in subarctic conditions are rare. Furthermore, knowledge on the…”
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A sequential modelling approach to assess groundwater–surface water resources in a snow dominated region of Finland by Okkonen, Jarkko, Kløve, Bjørn

“…► Sequential approach was developed to assess surface water–groundwater interactions. ► The methodology was tested on an unconfined esker aquifer in northern…”
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A conceptual and statistical approach for the analysis of climate impact on ground water table fluctuation patterns in cold conditions by Okkonen, Jarkko, Kløve, Bjørn

“…A robust conceptual and statistical approach is presented for the study of ground water table fluctuations with precipitation and temperature as input…”
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Erratum to “A sequential modelling approach to assess groundwater–surface water resources in a snow dominated region of Finland” [J. Hydrol. 411(1–2) (2011) 91–107] by Okkonen, Jarkko, Kløve, Bjørn

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Capture zone delineation methodology based on the maximum concentration: Preventative groundwater well protection areas for heat exchange fluid mixtures by Okkonen, Jarkko, Neupauer, Roseanna M.

“…Capture zones of water supply wells are most often delineated based on travel times of water or solute to the well, with the assumption that if the travel time…”
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Seismic reflection surveys in glaciofluvial deposits in Finland by Okkonen, Jarkko, Moisio, Kari

“…ABSTRACT Shallow seismic reflection surveys were conducted at five different locations in central Finland during the period of 2008–2011 in order to test the…”
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Frost quakes in wetlands in northern Finland during extreme winter weather conditions and related hazard to urban infrastructure by Afonin, Nikita, Kozlovskaya, Elena, Moisio, Kari, Kokko, Emma-Riikka, Okkonen, Jarkko

“…The paper reports the first results of an experiment in northern Finland during winter 2022–2023 that aimed at studying seismic events caused by seasonal…”
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Time-stability of soil water through boreal (60–68°N) gradient by Liwata, Pauliina, Hänninen, Pekka, Okkonen, Jarkko, Sutinen, Raimo

“…•We studied soil water conditions through boreal gradient.•Time-stability of soil water was found to apply to multi-year data.•Soil texture was one of the most…”
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conceptual approach for assessing the impact of climate change on groundwater and related surface waters in cold regions (Finland) by Okkonen, Jarkko, Jyrkama, Mikko, Kløve, Bjørn

“…A literature review of the impacts of anticipated climate change on unconfined aquifers is presented, along with a conceptual framework for evaluating the…”
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Effect of ozonation on treated municipal wastewater by Sallanko, Jarmo, Okkonen, Jarkko

“…In this study, the effects of ozonation on municipal treated wastewater were investigated. Batch experiments were conducted using two water samples from the…”
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Snow profile temperature measurements in spatiotemporal analysis of snowmelt in a subarctic forest-mire hillslope by Meriö, Leo-Juhani, Marttila, Hannu, Ala-aho, Pertti, Hänninen, Pekka, Okkonen, Jarkko, Sutinen, Raimo, Kløve, Bjørn

“…Continuous data on spatial and temporal patterns of snowmelt rates are essential for hydrological studies, but are commonly not available, especially in the…”
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Assessment of temporal and spatial variation in chemical composition of groundwater in an unconfined esker aquifer in the cold temperate climate of Northern Finland by Okkonen, Jarkko, Kløve, Bjørn

“…Samples of groundwater, surface water, snow and precipitation were collected to identify potential end-members for aquifer recharge in an unconfined esker…”
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Frost Quakes: Crack Formation by Thermal Stress by Okkonen, J., Neupauer, R. M., Kozlovskaya, E., Afonin, N., Moisio, K., Taewook, K., Muurinen, E.

“…Fractures in frozen soils (frost quakes) can cause damage to buildings and other infrastructure, but their formation mechanisms remain poorly understood. A…”
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Fractionation of Fresh Wastewater and Solubility of Phosphorus in Short-Term Storage by SALLANKO, JARMO, HINKKANEN, MIKKO, OKKONEN, JARKKO

“…In this research the characteristics of fresh wastewater were studied by filtration of organic material and nutrients. Besides the short-term dissolving of…”
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