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This research uses Principal Component Analysis (PCA) to investigate global ionospheric integrated electron content map (GIM) anomalies corresponding to Japan’s Iwate-Miyagi Nairiku earthquake on 13 June 2008 (UT) (M j = 7.2, JMA scale). The PCA transform is applied to GIMs for 20:00 to 22:00 on June 08, 11 and 12, 2008 (UT). To perform the transform, image processing is used to subdivide the GIMs into 100 (36° long. and 18° lat.) smaller maps to form transform matrices of dimensions 2 × 1. The transform allows for principal eigenvalues to be assigned to ionospheric integrated electron content anomalies. Anomalies are represented by large principal eigenvalues (i.e., >0.5 in a normalized set). The possibility of geomagnetic storms and solar flare activity affecting the results is done through examining the D st index for corresponding days. The study shows that for the Iwate-Miyagi Nairiku earthquake, PCA possibly determined earthquake related ionospheric disturbances for the whole region, including the epicenter.

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Central European Geology
Authors: Ádám Bede, Roderick B. Salisbury, András István Csathó, Péter Czukor, Dávid Gergely Páll, Gábor Szilágyi, and Pál Sümegi

The Ecse-halom is a burial mound (kurgan) in the Hortobágy region of Hungary. Built in the Late Copper Age/Early Bronze Age by nomadic people from the east, it now stands on the border between two modern settlements. A road of medieval origin runs along this border and cuts deeply into the body of the mound. The southern half of the mound was plowed and used as a rice field, and later a military observation tower was built on top of it. Despite this disturbance, the surface of the mound is in decent condition and provides a home for regionally significant, species-rich loess steppe vegetation. The mound comprises two construction layers as indicated by magnetic susceptibility and thin-section micro-morphological analysis. Examination of organic compounds and carbonate content at various levels showed different values, which suggest a variety of natural and anthropogenic stratigraphic layers. Mid-sized siltstone fraction is dominant in the section. The layers originate from the immediate vicinity of the mound, but have different characteristics than present-day soils. These mounds contain a valuable record of cultural and environmental conditions occurring at the time of their construction, and also serve as a refuge for ancient loess vegetation; therefore their conservation is highly recommended.

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. On the one hand, this is a direct consequence of the fact that the parameter set in this study was chosen to represent anthropogenic effects. Higher concentrations mean higher disturbance. On the other hand, this means that the quality of unpolluted

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study was chosen to represent anthropogenic effects. Higher concentrations mean higher disturbance. On the other hand, this means that the quality of unpolluted water is much more predictable based on background properties than that of a highly polluted

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Central European Geology
Authors: Zsuzsanna Szabó, Nóra Edit Gál, Éva Kun, Teodóra Szőcs, and György Falus

, only a minor illite precipitation is indicated at the entry point; therefore, the flow goes along without any disturbance by geochemical reactions. 3. Reactions in freshwater

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. Törőcsik 2009 Palaeoclimatic signals and anthropogenic disturbances from the peat bog at Nagybárkány (N Hungary) Hydrobiologia 631 1 87

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Mekong Basin consistent with climate change-induced atmospheric disturbances already observed in East Asia . – Theoretical and Applied Climatology , 111 , pp.  251 – 263 . 10.1007/s00704

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due to stretching. According to the magnetometery basement map of the region, the magnetic disturbance in the northern margin of the Shiraz Plain indicates that the Abrishami Fault is a basement fault ( Yousefi et al. 2001 ). The Akbarabad Fault has

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due to stretching. According to the magnetometery basement map of the region, the magnetic disturbance in the northern margin of the Shiraz Plain indicates that the Abrishami Fault is a basement fault ( Yousefi et al. 2001 ). The Akbarabad Fault has

Open access