inscription

Portail d'information géographique

Résultats de la recherche (50 résultats)

Consequences of Global Warming on Soil Processes in Arctic Regions

The paper deals with the following subjects : 1. Thawing of permafrost landscapes and changes in soil development 2. Ecological aspects of permafrost change 3. Reconstruction of holocene events - learning from the past. - (MT)
1996

New radiocarbon dates for the Vedde Ash and the Saksunarvatn Ash from Western Norway

The Vedde Ash Bed (mid-Younger Dryas) and the Saksunarvatn Ash (early Holocene) are important regional stratigraphic event markers in the North Atlantic, the Norwegian Sea, and the adjacent land area.It is thus essential to date them as precisely
1996

The California storm of January 1862

. The A. reconstructs the meteorological and geomorphic events of this episode in the Los Angeles Basin and adjacent areas.
1996

Settlement myth and settlement activity: interrelationships in the Zionist land of Israel

outlets of the collective memory and civil religion. Zionist myths may be interpreted as dealing with environmental struggles, social development and security. They are interelated with several chains of local or regional settlement processes and events.
1996

Geomorphology and kinematics of the Conturrana rockslide-debris flow (NW Sicily)

morphology. The event might have been induced by an earthquake in the 4th century.
1996

Patterns of sand transport on vegetated foredunes

This paper focuses on the sand transport rate patterns, observed at two sites along the Dutch coast, during several events. Special attention is paid to the interaction of the aeolian transport processes with both topography and vegetation. Patterns
1996

Väderestremer - geomorfologi

Climatic anomaly ; Earthquake ; Exceptional event ; Geomorphology ; Ice wedges ; Palaeogeography ; Permafrost ; Quaternary ; Sweden ; Weather type
1996

Lacustrine sedimentary records of brutal events in lake Le Bourget (Northwestern Alps-Southern Jura)

Lacustrine sedimentary records of brutal events in lake Le Bourget (Northwestern Alps-Southern Jura)
1996

Tertiary paleoweatherings and silcretes in the southern Paris Basin

The southern border of the Paris Basin has undergone successive weathering events during the Tertiary. Fluviatile and lacustrine deposits are scattered, being mainly confined to several North-South trending grabens. These are generally devoid
1996

A preliminary investigation into the impact of initial conditions on flood inundation predictions using a time/space distributed sensitivity analysis

/floodplain flow. Specifically changes in the specification of the floodplain topographic surface and the upstream boundary condition are considered for two flood events.
1996

A study on the effect of spatial scale on the parameters of a sediment transport equation for sheetwash

This paper presents a synthesis of results obtained during 3 experiments conducted using the same methodology for comparable contexts at various spatial scales but for short events. The unique methodology, the experimental control on factors
1996

Nature, chronostratigraphy and origin of late Holocene coastal sands at Portrush, Co. Antrim

, and C 14 dating, along with data from a nearby site, combine to suggest that the basal sands at Portrush may result from marine processes during extreme events. The overlying sands are probably aeolian, reworked from the underlying marine sand
1996

Rainfall distribution over the Indian Subcontinent during the 1987 and 1988 severe floods in Bangladesh

in northeastern and northwestern part of Bangladesh and adjacent Indian Territory. This rainfall pattern was also obvious during and/or prior to the severe flood events in Bangladesh. Extreme high water level of the Ganges in 1987 and that of the Brahmaputra
1996

Late stage 5 glacio-isostatic sea in the St. Lawrence valley, Canada and United States

This paper describes an attempt to date this marine event by using IRSL (infrared stimulated luminescence) and aminochronology dating methods and to reconstruct the extent and paleoenvironmental setting of the sea by studying the microfauna
1996

Stable isotope and lithologic evidence of late-Glacial and Holocene oceanography of the Northwestern Pacific and its marginal seas

transition, and the Holocene. During deglaciation, accumulation of the coarse terrigenous component decreased in sediments of the Bering Sea and the FNW Pacific before the north Pacific terminal event T1ANP, probably as a result of rising sea level
1996

Wind disturbance and development of a near-edge forest interior, Mary Peak, Oregon coast range

Biogeography ; Ecology ; Exceptional event ; Forest ; Forest edge ; Forest stand ; Oregon ; Plant canopy ; Statistics ; Storm ; United States of America ; Vegetation dynamics ; Wind
1996

Wind erosion and PM10 emissions from agricultural fields on the Columbia Plateau

Analysis from 8 wind events show that significant relations exist between total mass of soil in both horizontal (saltation) and vertical (suspension) transport. The data suggest that by limiting horizontal soil erosion, emitted dust can
1996

Sequential analysis of China's hazards in geoscience

On the basis of a large number of eventful catastrophic seven major sequences with respect to the occurences and transformations in geo-hazards: 1) Dry-cold wind-drift sand (dust) storm type, 2) Warm-wet water-soil hazards type, 3) Wet-hot typhoon
1996

A Late Pleistocene intertidal boulder pavement from an isostatically emergent coast, Dundalk Bay, Eastern Ireland

glacial raised beach and provides an improved record of sea level changes during part of the last deglacial event.
1996

The Dandenong Offensive Industry Zone: a case study in environmental conflict

An on-going conflict surrounding the management and operation of an offensive industry zone in the outer eastern suburbs of Melbourne spans the period from the mid-1970s to the present. The course of events described and the resident action groups
1996