Novajidrány–Sárvár-Erdészház : A Celtic Cemetery at the Foothills of Cserehát, Hungary

At the end of the 4th century BC, and the beginning of the 3rd century BC a Celtic population wave reached the eastern parts of the Carpathian Basin, including Northeastern Hungary. The elements of the funerary rite and the archaeological finds attest to the presence of the newly arrived communities in the cemeteries of the region. The present study serves as a preliminary report on the research results of a Celtic cemetery in the Hernád valley excavated in 2019. The site of Novajidrány–Sárvár-erdészház was in use between the late 4th century BC the earliest and the 3rd century BC and it fits well into the row of Late Iron Age cemeteries in the region. Both cremated and inhumated burials were documented with richly accompanied metal and pottery grave goods. Appearing next to the typically La Tène-styled finds, the graves also contained – mainly in the ceramic assemblages – Scythian-influenced forms which can be explained by the Celtic and Scythian cohabitation in the region during the Late Iron Age.

Universal power law of the gravity wave manifestation in the AIM CIPS polar mesospheric cloud images

We aim to extract a universal law that governs the wave display throughout the gravity wave population. Wave display morphology and clarity level varies throughout the wave population manifested through the PMC albedo data. Higher clarity refers to more distinct exhibition of the features which often correspond to larger variances and better organized nature. A gravity wave tracking algorithm is applied to the PMC albedo data taken by the AIM Cloud Imaging and Particle Size (CIPS) instrument to obtain a large ensemble of the gravity wave detections. The horizontal wavelengths in the range of ~ 20–60 km are the focus of the study. It shows that the albedo CWT power statistically increases as the background gets brighter. We resample the wave detections to conform to a normal distribution to examine the wave morphology beyond the cloud brightness impact. Sample cases are selected at the two tails and the peak of the normal distribution to represent the full set of wave detections. For these cases the albedo CWT power spectra follow exponential decay toward smaller scales. The high albedo power category has the most rapid decay (i.e., exponent = −3.2) and corresponds to the most distinct wave display. The wave display becomes increasingly more blurry for the medium and low power categories that hold the spectral exponents of −2.9 and −2.5, respectively. The majority of waves are straight waves whose clarity levels can be collapsed irrespective of the brightness levels but in the brighter background the wave signatures seem to exhibit mildly turbulent-like behavior.