Denis Wirrmann
Dados Biográficos
| ID | 4074722 |
|---|---|
| NOME | Denis Wirrmann |
| PRENOMES | Denis |
| SOBRENOME | Wirrmann |
| ASSINATURA | WIRRMANN D |
| AFILIAÇÕES | Institut de Recherche pour le Développement |
| VERIFICADO | Não |
| TOTAL DE OBRAS | 6 |
| TOTAL DE CITAÇÕES | 3 |
| TOTAL COMO AUTOR | 6 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1995 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2011 |
| ÍNDICE H | 1 |
Mid- to late Holocene environmental and climatic changes in New Caledonia, southwest tropical Pacific, inferred from the littoral plain Gouaro-Déva
Multiproxy analysis of three littoral cores from western New Caledonia supports the hypothesis that the main controlling factors of environmental changes are sea-level change, ENSO variability and extra-tropical phenomena, such as the Medieval Warm Period (MWP) marked by a tendency for La Niña-like conditions in the tropical Pacific. The record starts during the late Holocene sea-level rise when the terrestrial vegetation indicated wet and cool c…
Évolution des paléoenvironnements dans le Pacifique lors de la dernière déglaciation
Plusieurs études paléoclimatiques et paléoenvironnementales (analyses de séries coralliennes et sédimentaires) ont été menées à terre et en mer au cours des deux dernières décennies, en Nouvelle-Calédonie et dans l'archipel du Vanuatu. Bien qu'encore inachevées, elles apportent des informations majeures sur la variabilité des environnements dans cette région du sud-ouest du Pacifique depuis le dernier maximum glaciaire : les importantes fluctuati…
Late Holocene paleoenvironment in northern New Caledonia, southwestern Pacific, from a multiproxy analysis of lake sediments
Lithostratigraphic and palynological analysis of two cores recovered from the ‘Grand Lac’ (New Caledonia), combined with 35 14 C AMS dates, yields a paleoenvironmental record spanning the last 2000 yr. The lithology is represented mainly by clayey or laminated layers. A catastrophic event, which is marked by very coarse deposits, occurred probably between ca 1070–960 cal yr B.P. and possibly is associated with an unusually severe La Niña event. B…
Late Holocene Paleoclimatic Changes in Western Central Africa Inferred from Mineral Abundance in Dated Sediments from Lake Ossa (Southwest Cameroon)
Minerals derived from catchment soils were determined using FTIR spectroscopy in the well-dated core OW4 from Lake Ossa, a lowland rainforest area in Cameroon. This quantification provides a hydrologic record indicating that the magnitude of runoff events, and by inference, rainfall pattern, has varied during the Late Holocene. The comparison between minerogenic inputs and vegetation changes improves the understanding of the inferred climate dyna…
Late Quaternary Spatio-temporal Limnological Variations in the Altiplano of Bolivia and Peru
Between the western and eastern Andean cordilleras in Peru and Bolivia, there are three main lacustrine basins: Lake Titicaca, Lake Poopó, and the group of Coipasa-Uyuni. For the past few millennia, highly variable environmental conditions have been recorded in their sediments. Today a latitudinal meteorological gradient influences the lakes' status, leading to specific deposits and ostracod communities. Lake Titicaca in the north is oligohaline,…
Evolución paleohidrológica de la cuenca del lago Titicaca durante el Holoceno
La utilización de una función de transferencia ostrácodos/batimetría permitió, a partir de los resultados de 3 sondeos, reconstruir la paleohidrología del lago Titicaca desde hace 8 000 años BP. Los resultados obtenidos revelan una evolución compleja de las cuencas lacustres. De una manera general, el conjunto del Holoceno se caracteriza por niveles bajos, especialmente entre 8 000 y 3 900 años BP
Évolution des paléoenvironnements dans le Pacifique lors de la dernière déglaciation
Plusieurs études paléoclimatiques et paléoenvironnementales (analyses de séries coralliennes et sédimentaires) ont été menées à terre et en mer au cours des deux dernières décennies, en Nouvelle-Calédonie et dans l'archipel du Vanuatu. Bien qu'encore inachevées, elles apportent des informations majeures sur la variabilité des environnements dans cette région du sud-ouest du Pacifique depuis le dernier maximum glaciaire : les importantes fluctuati…
Late Quaternary Spatio-temporal Limnological Variations in the Altiplano of Bolivia and Peru
Between the western and eastern Andean cordilleras in Peru and Bolivia, there are three main lacustrine basins: Lake Titicaca, Lake Poopó, and the group of Coipasa-Uyuni. For the past few millennia, highly variable environmental conditions have been recorded in their sediments. Today a latitudinal meteorological gradient influences the lakes' status, leading to specific deposits and ostracod communities. Lake Titicaca in the north is oligohaline,…
Evolución paleohidrológica de la cuenca del lago Titicaca durante el Holoceno
La utilización de una función de transferencia ostrácodos/batimetría permitió, a partir de los resultados de 3 sondeos, reconstruir la paleohidrología del lago Titicaca desde hace 8 000 años BP. Los resultados obtenidos revelan una evolución compleja de las cuencas lacustres. De una manera general, el conjunto del Holoceno se caracteriza por niveles bajos, especialmente entre 8 000 y 3 900 años BP
Late Holocene Paleoclimatic Changes in Western Central Africa Inferred from Mineral Abundance in Dated Sediments from Lake Ossa (Southwest Cameroon)
Minerals derived from catchment soils were determined using FTIR spectroscopy in the well-dated core OW4 from Lake Ossa, a lowland rainforest area in Cameroon. This quantification provides a hydrologic record indicating that the magnitude of runoff events, and by inference, rainfall pattern, has varied during the Late Holocene. The comparison between minerogenic inputs and vegetation changes improves the understanding of the inferred climate dyna…
Late Holocene paleoenvironment in northern New Caledonia, southwestern Pacific, from a multiproxy analysis of lake sediments
Lithostratigraphic and palynological analysis of two cores recovered from the ‘Grand Lac’ (New Caledonia), combined with 35 14 C AMS dates, yields a paleoenvironmental record spanning the last 2000 yr. The lithology is represented mainly by clayey or laminated layers. A catastrophic event, which is marked by very coarse deposits, occurred probably between ca 1070–960 cal yr B.P. and possibly is associated with an unusually severe La Niña event. B…
Évolution des paléoenvironnements dans le Pacifique lors de la dernière déglaciation
Plusieurs études paléoclimatiques et paléoenvironnementales (analyses de séries coralliennes et sédimentaires) ont été menées à terre et en mer au cours des deux dernières décennies, en Nouvelle-Calédonie et dans l'archipel du Vanuatu. Bien qu'encore inachevées, elles apportent des informations majeures sur la variabilité des environnements dans cette région du sud-ouest du Pacifique depuis le dernier maximum glaciaire : les importantes fluctuati…
Mid- to late Holocene environmental and climatic changes in New Caledonia, southwest tropical Pacific, inferred from the littoral plain Gouaro-Déva
Multiproxy analysis of three littoral cores from western New Caledonia supports the hypothesis that the main controlling factors of environmental changes are sea-level change, ENSO variability and extra-tropical phenomena, such as the Medieval Warm Period (MWP) marked by a tendency for La Niña-like conditions in the tropical Pacific. The record starts during the late Holocene sea-level rise when the terrestrial vegetation indicated wet and cool c…
Geology and Paleoclimatology Research (6 obras) · Geography (4 obras) · Geology (4 obras) · Holocene (4 obras) · Paleontology (4 obras) · Ecology (3 obras) · Isotope Analysis in Ecology (3 obras) · Oceanography (3 obras) · Pacific and Southeast Asian Studies (3 obras) · Vegetation (pathology) (3 obras)