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Newgrange (Irish: Sí an Bhrú [1]) is a prehistoric monument in County Meath in Ireland, located on a rise overlooking the River Boyne, eight kilometres (five miles) west of the town of Drogheda. [2] It is an exceptionally grand passage tomb built during the Neolithic Period, around 3200 BC, making it older than Stonehenge and the Egyptian ...
Also amphidrome and tidal node. A geographical location where there is little or no tide, i.e. where the tidal amplitude is zero or nearly zero because the height of sea level does not change appreciably over time (meaning there is no high tide or low tide), and around which a tidal crest circulates once per tidal period (approximately every 12 hours). Tidal amplitude increases, though not ...
The rising Sun illuminates the inner chamber of Newgrange, Ireland, only at the winter solstice.. Archaeoastronomy (also spelled archeoastronomy) is the interdisciplinary [1] or multidisciplinary [2] study of how people in the past "have understood the phenomena in the sky, how they used these phenomena and what role the sky played in their cultures". [3]
For a clustering example, suppose that five taxa (to ) have been clustered by UPGMA based on a matrix of genetic distances.The hierarchical clustering dendrogram would show a column of five nodes representing the initial data (here individual taxa), and the remaining nodes represent the clusters to which the data belong, with the arrows representing the distance (dissimilarity).
A biogeographic realm is the broadest biogeographic division of Earth's land surface, based on distributional patterns of terrestrial organisms. They are subdivided into bioregions, which are further subdivided into ecoregions.
The ancient route lies on a north-south axis, and is made up of two parallel banks 20m apart. It probably originated from an area that once was a pond, now dried-up, and advances east-west, sloping upwards, to the north of the Newgrange ridge. The southern end of the track is closed off by a U-shaped terminal.
A species range map represents the region where individuals of a species can be found. This is a range map of Juniperus communis, the common juniper.. Species distribution, or species dispersion, [1] is the manner in which a biological taxon is spatially arranged. [2]
O'Kelly used her fluency in Irish and her knowledge of archaeology to create the necessary archaeological terms for the definitive English/Irish Dictionary edited by Tomás de Bháldraithe. She was behind the research which led to the discovery of Newgrange 's solar importance, made drawings of the stones of the Boyne Valley sites, most notably ...