Magnetic properties of soils in a designated Natura area (GR4310010, Giouchtas Mountain)

Abstract

The magnetic behavior of the geologic formations around the Giouchtas or Juchtas Mountain (Mt.) in Central Crete, Greece, has been studied. The magnetic parameters (magnetic susceptibility [MS] and temperature dependence of the magnetic susceptibility) of 160 surface soil samples were interpreted based on available information (e.g., topographic, geologic, and historical) for the area of study. The soil samples have been collected from the low-and high-elevation regions of Giouchtas Mt. The low-elevation region, surrounding a northsouth asymmetric ridge (strongly affected by the tectonic activity), is mainly covered by Miocene and recent sediments, whereas the high-elevation region is dominated by limestones. Differences in the spatial distribution of the MS and the thermomagnetic behavior of the soil samples indicated the strong influence of natural and anthropogenic factors on the geologic formations.

Spatiotemporal environmental monitoring of the karst-related Almyros Wetland (Heraklion, Crete, Greece, Eastern Mediterranean)

“…Kokinou et al ( 2013 ) conducted a geophysical survey in the study area using magnetic susceptibility and thermomagnetism (Hansen et al, 1981 ; Petrovsky & Ellwood, 1999 ; Thompson & Oldfield, 1986 ) to identify sites with contaminated topsoil (Bityukova et al, 1999 ; Boyko et al, 2004 ; Petrovsky et al, 2001 ; Scholger, 1998 ) regarding heavy metals (Goluchowska, 2001 ; Kokinou, 2015 ; Sarris et al, 2009 ; Strzyszcz et al, 1996 ). The geophysical data were interpreted considering the area’s topography, geology, urban network and blowing winds.…”

“…Furthermore, the frequencydependent susceptibility (χ FD %) was calculated using the formula: χ FD (%) = [(χ LF -χ HF )/χ LF ]x100, where χ LF is the susceptibility measured at low frequency, and χ HF is the susceptibility measured at high frequency. Kokinou et al (2013) conducted a geophysical survey in the study area using magnetic susceptibility and thermomagnetism (Hansen et al, 1981;Petrovsky & Ellwood, 1999;Thompson & Oldfield, 1986) to identify sites with contaminated topsoil (Bityukova et al, 1999;Boyko et al, 2004;Petrovsky et al, 2001;Scholger, 1998) regarding heavy metals (Goluchowska, 2001;Kokinou, 2015;Sarris et al, 2009;Strzyszcz et al, 1996). The geophysical data were interpreted considering the area's topography, geology, urban network and blowing winds.…”

Integrating Earth Observation with Stream Health and Agricultural Activity

“…Karteros Gorge is part of a larger geological complex of the Giouchtas Ecological Park in Archanes (https://landofexperiences.gr/travels/karterosgorge/ (accessed on 15 October 2023)). The park includes Giouchtas Mountain [33][34][35] and three gorges: Knosanos, Kounaviano, and Astrakanos or Karteros gorge, with a total length of 22 km. The entire area is environmentally protected (Natura 2000 network).…”

“…Topsoil samples were collected along the Karteros Stream, and GPS coordinates (in EGSA_87 system) were taken from each sampling location to match the available topographic data. Topsoil samples from area I were analysed for magnetic susceptibility using well-tested methodology, already applied in previous studies [23][24][25]34,41], to investigate the study area for possible heavy-metal concentrations [25,34,[42][43][44][45]. In environmental magnetism [46], the most used magnetic parameter is magnetic susceptibility (χ), which is the ratio of the induced magnetisation of a sample in the presence of a weak magnetic field to the applied field itself.…”

Geochemical Fractionation and Risk Assessment of Potentially Toxic Elements in Sediments from Kupa River, Croatia

“…So, on our example of Kupa River, it was the confirmed finding of [27] that concluded that two powerful applications of susceptibility measurements of soils (and sediments in our case) exist: the identification of polluted areas and the detailed mapping of these areas to reveal the extent of pollution. The other study [28] conducted in a designated Natura area of Giouchtas Mountain, Crete, Greece showed that studying the magnetic properties of surface soils, along with existing information, allowed the authors to characterize the natural and anthropogenic impacts.…”