Multi-hydro hydrological modelling of a complex peri-urban catchment with storage basins comparing C-band and X-band radar rainfall data     

Bianca Alves de Souza  Igor da Silva Rocha Paz  Abdellah Ichiba  Bernard Willinger  Auguste Gires  Jose Carlos Cesar Amorim 《水文科学杂志》2013,58(11):1619-1635

ABSTRACT

The spread of impervious surfaces in urban areas combined with the rise in the intensity of rainfall events as a result of climate change has led to dangerous increases in storm water flows. This paper discusses a new implementation of the fully distributed hydrological model Multi-Hydro (developed at École des Ponts ParisTech), when operating storage basins, and its ability to deal with high-resolution radar rainfall data. The peri-urban area of Massy (south of Paris, France) was selected as a case study for having six of these drainage facilities, used extensively in flood control. Two radar rainfall datasets with different spatiotemporal resolutions were used: Météo-France’s PANTHER rainfall product (C-band) and ENPC’s X-band DPSRI. The rainfall spatiotemporal variability was analysed statistically using Universal Multifractals (UM). Finally, to validate the application, the water level simulations were compared with local measurements in the Cora storage basin located next to the catchment’s single outlet.  相似文献   

The influence of temperature, moisture, and eolian activity on Holocene lake development in West Greenland     

Bianca B. Perren  N. John Anderson  Marianne S. V. Douglas  Sherilyn C. Fritz 《Journal of Paleolimnology》2012,48(1):223-239

Holocene paleolimnological records (diatoms, organic content, spectrally inferred sediment chlorophyll-a) from three West Greenland lakes (~67°N) situated along a transect from the outer coast to a nunatak at the periphery of the Greenland Ice Sheet are used to explore the nature of regional postglacial lake development and its relationship to Holocene climate evolution. The lakes were deglaciated asynchronously by approximately 4?ka (earliest on the coast) and thus their sediment records document different starting points of Holocene ontogeny, both temporally and paleoclimatically. Despite similar time-transgressive characteristics of the diatom stratigraphies, overarching climatic factors, principally effective moisture, and eolian inputs, govern individual lake development. The transition to Neoglaciation between 5.6 and 4?ka BP marks a shift toward a cooler, moister, windier climate from the aridity and higher temperatures of the mid-Holocene (8?C6?ka BP). A shift toward increased aridity, windiness, and eolian activity is documented in the interior lakes over the last 500?years. These lake records demonstrate the sensitivity of freshwater lakes in arid regions to changes in effective moisture and highlight the role of wind and eolian activity in Arctic lake environments.  相似文献   

Paleoclimatic record of a long deep sea core from the eastern Mediterranean     

Maria Bianca Cita  Colette Vergnaud-Grazzini  Christian Robert  Hervé Chamley  Neri Ciaranfi  Sara d&#x;Onofrio 《Quaternary Research》1977,8(2):205-235

A deep-sea core over 16 m long from the crestal area of the Mediterranean Ridge has been investigated with different techniques, including quantitative micropaleontology, stable isotopes (measured on the epipelagic species Globigerinoides ruber and on the mesopelagic species Globorotalia inflata), and clay mineralogy. The resulting record of climatic fluctuations can be cross correlated to other Mediterranean cores by means of isochronous lithologies (tephra layers and sapropels). The climatic record of the Mediterranean is similar in character, phase, and chronology to the records investigated in the equatorial Pacific and in the Caribbean. Isotope stages 1 to 17 have been recognized. Cyclically repeated stagnant cycles resulting in sapropel deposition complicate both the isotopic and the faunal signal. The isotopic investigations reveal that the temperature change in the surface layers of the eastern Mediterranean was no greater than 8°C in the late “glacial” Pleistocene. The chronostratigraphic and biostratigraphic interpretation of Core KS09 indicate that the mean sedimentation rate was 2.4 cm/1000 years, a value very close to the 2.5 cm/1000 years calculated for the entire Quaternary section at DSDP Site 125, also located in the crestal area of the Mediterranean Ridge in the Ionian Basin. The base of KS09 is likely to be very close to the Brunhes/Matuyama boundary dated at 0.7 my.  相似文献   

Trophic characteristics of the Manila clam (Tapes philippinarum Adams and Reeve)     

Sorokin  Yu. I.; Giovanardi  O. 《ICES Journal of Marine Science》1995,52(5):853-862

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A forecast of public water scarcity on Leu-Rotunda Plain,Romania, for the end of the 21st century     

Bianca Mitrică  Istvan Bogardi  Eugen Mitrică  Irena Mocanu  Marin Minciună 《Norsk geografisk tidsskrift. Norwegian journal of geography》2017,71(1):12-29

The article examines the risk of water shortages due to the climate change on Leu-Rotunda Plain, which is part of Oltenia Plain in Romania. The region has been exposed to several extreme climatic phenomena, mostly droughts, which has created several problems related to water quality and quantity. The authors defined climate change scenarios using two regional climate models. Water resources under climate change were estimated by a regional numerical groundwater model covering a deep aquifer. The water demand components were estimated for households, industries, services, and livestock, based on specific socio-economic assumptions. A non-probabilistic risk assessment, using simplified fuzzy sets mathematics, was used to estimate water supply, water demand, and the consequences of water shortages. The results of the study revealed significant vulnerability in the water supply, a limited territorial expansion of sewerage networks, an expected increase in households’ demand, an expected increase in industrial and services water demand, a relatively stable demand for water for livestock farming, and an important water shortage in the study area. The authors conclude by highlighting a set of actions to mitigate the risk of the potential crisis.  相似文献   

Seasonal and ontogenetic changes in the diet of blenny Hypleurochilus fissicornis: An estuarine mariculture as a model of the reef environment   总被引：1，自引：0，他引：1  

Bianca Possamai  Luis Fernando Fvaro 《Marine Ecology》2019,40(2)

The Blenniidae family is characterised by small cryptic fish. Due to the small size of these specimens, the sampling is very difficult and information about the ecological role of these fishes is vague. However, mariculture adds reef encrusting organisms that attract blennies, which makes sampling easier. Furthermore, recognising species feeding is critical to understand biological communities. In this study, we evaluated the diet of blenny Hypleurochilus fissicornis in a mariculture, to clarify its influence on the benthic fauna and its interactions with the reef environment. We evaluated the seasonal variation (four seasons chosen by the abiotic variables) and the ontogenic changes (three classes defined by L₅₀ of the species: juvenile, transition and adult) in the diet. Hydrozoans were the main prey, but H. fissicornis fed on a variety of other benthic organisms, exhibiting opportunistic habits. The diet of H. fissicornis was complemented by Amphipods in autumn, Ostracods in winter, and bivalves in summer. Juveniles fed more on Ostracods than the other classes, while the transition class fed mainly on Hydrozoans and a variety of rare items, and adults consumed almost exclusively Hydrozoans and some Cirripedia. Therefore, we conclude that H. fissicornis is an opportunistic feeder and may influence benthic organisms. The establishment of fouling organisms on the mariculture structures allows the use of this area by the blenny, since they promote its feeding base.  相似文献   

Preface     

Judith A. McKenzie  Daniel Bernoulli  Maria Bianca Cita 《Sedimentology》2009,56(1):1-2

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Source‐to‐sink relationships along the South‐Central Chilean margin: evidence from detrital apatite fission‐track analysis     

Bianca Heberer  Jan H. Behrmann  Meinert K. Rahn 《Basin Research》2011,23(5):551-570

Detrital fission‐track studies on sedimentary basins surrounding eroding mountain belts provide a powerful tool to reconstruct exhumation histories of the source area. However, examples from active arc‐trench systems are sparse. In this study, we report detrital apatite fission‐track (AFT) data from Holocene and Pleistocene turbiditic trench and modern river sediments at the Chilean margin (36°S‐47°S). Sediment petrography and detrital AFT data point to different major sediment sources, underlining the need for multidisciplinary studies: whereas sediment petrography indicates the erosion of large volumes of volcanic detritus, no such volcanic signal is seen in the detrital age pattern. Areally subordinate plutonic units are identified as the main, often unique sources. This result has important implications for studies of fossil systems, where the feeder areas are eroded, and where the youngest age population is often interpreted to indicate active volcanism. For the southernmost part of the study area in the Patagonian Andes, where the source area is mainly composed of granitoids, the sediment is derived from only small portions along the main divide, pointing to focused glacial erosion there. Our detrital AFT data show no exhumational signal that could be related to the subduction of the actively spreading Chile Ridge at c. 47°S and to the opening of a slab window beneath the South American Plate.  相似文献   

Calabrian and Ionian： A proposal for the definition of Mediterranean stages for the Lower and Middle Pleistocene     

Maria Bianca Cita Luca Capraro Neri Ciaranfi Enrico Di Stefano Maria Marino Domenico Rio Rodolfo Sprovieri Gian Battista Vai 《《幕》》2006,29(2):107-114

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Acoustic waves in the lower solar atmosphere     

C. Chiuderi  C. Giovanardi 《Solar physics》1975,41(1):35-42

The propagation and dissipation of acoustic waves in the lower solar atmosphere is studied. The level of shock formation is computed for various initial conditions. It is shown that shocks form rather low in the atmosphere and that this result does not depend critically on the assumed initial conditions.  相似文献