551 Geology, hydrology, meteorology

Sistema de Clasificación Bioclimática Mundial

"Desde hace más de una década estoy tratando de poner a punto una clasificación bioclimática que tenga jurisdicción en toda la Tierra.

"In the new 'Worldwide Bioclimatic Classification System' proposed, five macrobioclimates, twenty-seven bioclimates and five bioclimatic variants are recognized. The five macrobioclimates are: Tropical, Mediterranean, Temperate, Boreal and Polar. Each of them, and every one of their subordinate units or bioclimates, is represented by a characteristic group of plant formations, biocenosis and plant communities. Within almost every bioclimate, a number of variations in the seasonal rainfall patterns of rain allows us to recognize the bioclimatic variants.

U.S. Geological Survey Library Classification System

"The U.S. Geological Survey Library classification system has been designed for earth science libraries. It is a tool for assigning call numbers to earth science and allied pure science materials in order to collect these materials into related subject groups on the library shelves and arrange them alphabetically by author and title. The classification can be used as a retrieval system to access materials through the subject and geographic numbers.

Geologische Bundesanstalt Thesaurus

"Der Thesaurus enthält Begriffe, wie sie in den Text-Publikationen und geologischen Karten der Bundesanstalt verwendet werden. Alle Begriffe haben eigene http-Webadressen, welche als Hyperlinks für Online-Texte, in Webanwendungen, oder als Attribute zu Geodaten verwendet werden können. Jeder einzelne Begriff kann auch mehrere alternative Namen besitzen, und ist in seiner Bedeutung (Semantik) durch übergeordnete, untergeordnete und verwandte Begriffe festgelegt.

"The thesaurus contains terms, as used in the text publications and geological maps of the Federal Institution, all of which have their own http web addresses, which can be used as hyperlinks for online texts, in web applications, or as attributes for geodata Single term can also have several alternative names, and is defined in its meaning (semantics) by superior, subordinate, and related terms.

U.S. Geological Survey Thesaurus

"The USGS Thesaurus is the principal controlled vocabulary supporting Science Topics. It is designed as a formal thesaurus conforming to ANSI/NISO Z39.19, with rigid adherence to the hierarchical (BT, NT) term relationships, generic non-hierarchical (RT) relationships, and lead-in term relationships linking non-preferred terms to descriptors either singly (UF) or in a compound USE-WITH relationship. The thesaurus is faceted, meaning its top terms delineate general aspects of information resources: Sciences: Major educational fields, fields of study, and professional groupings within USGS.

SEMIDE Thesaurus

"EMWIS is an initiative of the Euro-Mediterranean Partnership. It provides a strategic tool for exchanging information and knowledge in the water sector between and within the Euro Mediterranean partnership countries. All the countries involved in the Euro-Mediterranean Partnership are concerned: The 27 EU member states; The 10 Mediterranean Partner Countries (Algeria, Egypt, Israel, Jordan, Lebanon, Morocco, Palestine, Syria, Tunisia and Turkey). At the conference of the Euro-Med Water Directors (Rome, Nov.

Saffir-Simpson Hurricane Wind Scale

"The Saffir-Simpson Hurricane Wind Scale is a 1 to 5 rating based on a hurricane's sustained wind speed. This scale estimates potential property damage. Hurricanes reaching Category 3 and higher are considered major hurricanes because of their potential for significant loss of life and damage. Category 1 and 2 storms are still dangerous, however, and require preventative measures. In the western North Pacific, the term 'super typhoon' is used for tropical cyclones with sustained winds exceeding 150 mph."

Surface Water Classifications

"Surface Water Classifications are designations applied to surface water bodies, such as streams, rivers and lakes, which define the best uses to be protected within these waters (for example swimming, fishing, drinking water supply) and carry with them an associated set of water quality standards to protect those uses. Surface water classifications are one tool that state and federal agencies use to manage and protect all streams, rivers, lakes, and other surface waters in North Carolina.