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A col, also called saddle point or neutral point, is in meteorology, the point of intersection of a trough and a ridge in the pressure pattern of a weather map. It takes the form of a saddle where the air pressure is relatively higher than that of the low-pressure regions, but lower than that of the anticyclonic zones.
The bulbs are sorted, the bulbs large enough to flower being sold and the smaller bulbs replanted. The bulbs are peeled, usually by students or foreign workers. They are then disinfected and dried out at a high temperature in huge bulb sheds ( bollenschuren ), a characteristic building in this area.
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 ...
Mean Annual Temperature map of Ohio from Geography of Ohio 1923. The maps that reflect the territorial distribution of climatic conditions based on the results of long-term observations are called climatic maps. [9] These maps can be compiled both for individual climatic features (temperature, precipitation, humidity) and for combinations of ...
Often called mean sea level (MSL), it is a type of standardized geodetic vertical datum that is used in numerous applications, including surveying, cartography, and navigation. Mean sea level is commonly defined as the midpoint between the mean low and mean high tides at a particular location. [6] sea stack See stack. seabed. Also sea floor or ...
These watches are occasionally issued, and usually mean that a major tornado outbreak is possible, where the potential for multiple strong to violent (EF4 and EF5) tornadoes exists. Usually only reserved for forecast "high-end" severe weather events, this type of watch is usually valid for a longer period of time and issued for a larger area by ...
The most common purpose of a thematic map is to portray the geographic distribution of one or more phenomena. Sometimes this distribution is already familiar to the cartographer, who wants to communicate it to an audience, while at other times the map is created to discover previously unknown patterns (as a form of Geovisualization). [17]
The various features shown on the map are represented by conventional signs or symbols. For example, colors can be used to indicate a classification of roads. These signs are usually explained in the margin of the map, or on a separately published characteristic sheet. [17] [18] [19] Topographic maps are also commonly called contour maps or ...