Joint interpretation of the hydrochemistry of two neighbouring basins by N-way multivariate methods     

Rosario Soledad Barranquero  Marcelo Raúl Varni  Rafael Pardo  Marisol Vega  María Emilia Zabala  Víctor Alejandro Ruiz de Galarreta 《Environmental Earth Sciences》2016,75(4):335

  相似文献   

Assessment of the effects of urban and industrial development on water and sediment quality of the Drenica River in Kosovo     

Fatbardh Gashi  Stanislav Frančišković-Bilinski  Halka Bilinski  Leutrim Kika 《Environmental Earth Sciences》2016,75(9):801

  相似文献   

Further evidence for magnetic susceptibility as a proxy for the evaluation of heavy metals in mining wastes: case study of Tlalpujahua and El Oro Mining Districts     

Juan Morales  María del Sol Hernández-Bernal  Pedro Corona-Chávez  Avto Gogichaishvili  Francisco Bautista 《Environmental Earth Sciences》2016,75(4):309

  相似文献   

Chemical and isotopic characteristics of groundwater-dominated Radovna River (NW Slovenia)     

Anja Torkar  Mihael Brenčič  Polona Vreča 《Environmental Earth Sciences》2016,75(18):1296

  相似文献   

Contamination assessment of ecotoxic metals in recent sediments from the Ergene River,Turkey     

Sari Erol  Cukrov Neven  Frančišković-Bilinski Stanislav  Kurt Mehmet Ali  Halli Mihri 《Environmental Earth Sciences》2016,75(13):1051

  相似文献   

Dynamic Uncertainty in Cost-Benefit Analysis of Evacuation Prior to a Volcanic Eruption     

Mark Bebbington  Ričardas Zitikis 《Mathematical Geosciences》2016,48(2):123-148

  相似文献   

Modelling the influence of environmental and weather factors on the density of the invasive polychaete Boccardia proboscidea          下载免费PDF全文

Griselda V. Garaffo  María L. Jaubet  María A. Sánchez  Elizabeth N. Llanos  Eduardo A. Vallarino  Rodolfo Elías 《Marine Ecology》2016,37(6):1256-1265

The inter‐tidal zone around sewage discharges in a Southwest Atlantic shore (Mar del Plata, Argentina) is currently colonized by extensive inter‐tidal reefs of the invasive spionid Boccardia proboscidea. Understanding the links between both human and natural disturbances and the massive development of non‐indigenous species will help prevent marine bioinvasions, which are already favoured by global oceanic trade. We present herein predictive models for variations in the density of B. proboscidea around sewage discharges of Mar del Plata, using environmental (pH, turbidity, temperature, salinity and total organic matter content), weather (wind direction and storm records), spatial (sites) and temporal (season and year) variables. Density variations were modelled by generalized linear models, and model averaging (multimodel inference) was used to obtain predicted values. The highest predicted values of B. proboscidea density occurred at sites to the south of the sewage effluent in spring. These sites are more affected by urban effluent discharges and they showed increased B. proboscidea density when the north wind was predominant. In addition, B. proboscidea density values were higher in sites with 20–22 °C (seawater temperature), high total organic matter content in sediments and low salinity. The averaged model was only a good ‘predictive model’ for sites to the north of the outfall, but was useful as an ‘explanatory model’ in all sites. Such predictions may help to back up conservation and management policies and decisions.  相似文献   

Debris flows of 28 June 2014 near the Arshan village (Siberia,Republic of Buryatia,Russia)   总被引：1，自引：0，他引：1  

Alena V. Kadetova  Artem A. Rybchenko  Elena A. Kozireva  Vadim A. Pellinen 《Landslides》2016,13(1):129-140

On 28 June 2014, high intensity rainfall resulted in seven simultaneous debris flows going down the slopes of the Tunka Ridge in the vicinity of Arshan village, which is a balneological and alpine resort (51° 54′ 31″ N, 102° 25′ 44″ E). The debris flows caused one life loss and several injuries, 112 buildings were damaged, and 15 were completely destroyed. The total volume of the transported deposits amounted to 3?×?10⁶ m³. Debris flows’ formation began with the failure of weak sediments in the hanging cirques. Similar phenomena had not been recorded in the study area for over 40 years. The article presents a complete picture of the event and analysis of geological, geomorphological, and meteorological conditions for debris flows formation, for which extreme local rainfall was the major cause.  相似文献   

Modelling non-stationary water ages in a tropical rainforest: A preliminary spatially distributed assessment     

Alicia Correa  Christian Birkel  Jason Gutierrez  Joni Dehaspe  Ana María Durán-Quesada  Chris Soulsby  Ricardo Sánchez-Murillo 《水文研究》2020,34(25):4776-4793

Pristine tropical forests play a critical role in regional and global climate systems. For a better understanding of the eco-hydrology of tropical “evergreen” vegetation, it is essential to know the partitioning of water into transpiration and evaporation, runoff and associated water ages. For this purpose, we evaluated how topography and vegetation influence water flux and age dynamics at high temporal (hourly) and spatial (10 m) resolution using the Spatially Distributed Tracer-Aided Rainfall-Runoff model for the tropics (STARRtropics). The model was applied in a tropical rainforest catchment (3.2 km²) where data were collected biweekly to monthly and during intensive monitoring campaigns from January 2013 to July 2018. The STARRtropics model was further developed, incorporating an isotope mass balance for evapotranspiration partitioning into transpiration and evaporation. Results exhibited a rapid streamflow response to rainfall inputs (water and isotopes) with limited mixing and a largely time-invariant baseflow isotope composition. Simulated soil water storage showed a transient response to rainfall inputs with a seasonal component directly resembling the streamflow dynamics which was independently evaluated using soil water content measurements. High transpiration fluxes (max 7 mm/day) were linked to lower slope gradients, deeper soils and greater leaf area index. Overall water partitioning resulted in 65% of the actual evapotranspiration being driven by vegetation with high transpiration rates over the drier months compared to the wet season. Time scales of water age were highly variable, ranging from hours to a few years. Stream water ages were conceptualized as a mixture of younger soil water and slightly older, deeper soil water and shallow groundwater with a maximum age of roughly 2 years during drought conditions (722 days). The simulated soil water ages ranged from hours to 162 days and for shallow groundwater up to 1,200 days. Despite the model assumptions, experimental challenges and data limitation, this preliminary spatially distributed model study enhances knowledge about the water ages and overall young water dominance in a tropical rainforest with little influence of deeper and older groundwater.  相似文献   

Multi‐kilometre long pathway of geofluids migration: Clues concerning an ophiolite serpentinization setting possibly responsible for the inferred abiotic provenance of methane in thermal water outflows of the South‐West Carpathians (Romania)     

Horia Mitrofan  Constantin Marin  Florina Chitea  Nicoleta Cadicheanu  Ioan Povar&#x;  Alin Tudorache  Daniela Elena Ioni&#x;&#x;  Mirela‐Adriana Anghelache 《地学学报》2021,33(1):56-73

Methane occurrences displaying signatures of a possible abiotic origin had previously been reported in the South‐West Carpathians (Romania). Such an accumulation, at Tisovi?a, was intercepted by a well drilled in an ophiolitic rocks massif, whereas in two other localities—situated tens of kilometres faraway—the concerned methane is released via thermal groundwater outflows that are apparently not associated with any ultramafic products. By using groundwater ionic compositions, corroborated with previously published isotopic (¹³C‐CH₄, ²H‐CH₄, ³He/⁴He) and molecular gas analyses, we assessed in more detail the conjectured abiotic provenance of methane, and quantitatively investigated the hypothesis of a progressive mixing between two, abiotic and thermogenic, methane end‐members. The corresponding geofluids behaviour was modelled by hypothesizing a “concealed” ophiolite serpentinization setting (largely similar to that at Tisovi?a), whose abiotic methane production was “diverted” towards remote discharges at ground surface, via a ~20‐km‐long flowpath supposedly generated by recently operating extensional tectonics.  相似文献