منابع مشابه
Retreat of Chalk cliffs in the eastern English Channel during the last century
The retreat of chalk cliffs fringing the eastern English Channel contributes shingle to the beaches which helps to protect the cliffs and slow down erosion. Conversely, cliff retreat endangers settlements and infrastructure on the clifftop. Rates of retreat have been calculated by a variety of methods over the past century, but no attempt has been made to provide a complete coverage that allows...
متن کاملNumerical Approach of the Littoral Instability of Chalk Cliffs: Case of Grandes Dalles (The Large Flagstones)
The various situations representing coastal cliffs of Haute Normandy are tested on numerical models. The parameters taken into account are: the lithology of chalks and the presence or absence of fractures. It is a question of specifying the mechanical characteristics of chalk and the inside of the fractures. The chalk cliff of 80m height, with a vertical cliff face, is modeled in distinct eleme...
متن کامل287Ð293 Cromer
ning services. Alternatively, teenagers may access similar care in maternity clinics. In the Netherlands, the primary care system is composed of general practitioners who provide most contraception, which is available for a small fee, to women of all ages. In addition, a network of public clinics (called Rutgers Stichting) provides family planning services for women of all ages. In Great Britai...
متن کاملThin Gravel Deposits on Wave-Eroded Cliffs Near Barrow, Alaska
‘OGjaerevoll, 0. 1963. Botanical investigations in central Alaska especially in the White Mountains. Part 11. Det Kg1 Norske Videnskabers Selskabs Skrifter, 4. 115 pp. 11L6ve, D. and N. J. Freedman. 1956. A plant collection from SW Yukon. Botaniska Notiser, 109: 153-211. IzViereck, L. A. 1967. Plants above 2,140 meters (7,000 feet) in the Alaska Range. Bryologist, 70: 345-347. 13Bakewel1, A. 19...
متن کاملWalking Atop the Cliffs
Despite a growing body of descriptive, theoretical and practical knowledge about Information Systems Development (ISD), large-scale information system development and implementation projects still fail in high numbers. The deeper causes of such failures are only partially understood. This study uses an action research approach in which prescriptions and recommendations drawn from research on an...
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ژورنال
عنوان ژورنال: Nature
سال: 1905
ISSN: 0028-0836,1476-4687
DOI: 10.1038/072008a0