The end-Cretaceous in the southwestern Tethys (Elles,Tunisia): orbital calibration of paleoenvironmental events before the mass extinction     

Nicolas Thibault  Bruno Galbrun  Silvia Gardin  Fabrice Minoletti  Laurence Le Callonnec 《International Journal of Earth Sciences》2016,105(3):771-795

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Hazard zoning for volcanic ballistic impacts at El Chichón Volcano (Mexico)     

Miguel A. Alatorre-Ibargüengoitia  Horacio Morales-Iglesias  Silvia G. Ramos-Hernández  Juan Jon-Selvas  Julio M. Jiménez-Aguilar 《Natural Hazards》2016,81(3):1733-1744

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Considerations on the Teaching and the Popularization of Cosmology     

Erik Stengler  Cristina Silvia Hansen Ruiz 《Astrophysics and Space Science》1998,263(1-4):405-408

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The rainfall intensity–duration control of shallow landslides and debris flows: an update     

Fausto Guzzetti  Silvia Peruccacci  Mauro Rossi  Colin P. Stark 《Landslides》2008,5(1):3-17

A global database of 2,626 rainfall events that have resulted in shallow landslides and debris flows was compiled through a thorough literature search. The rainfall and landslide information was used to update the dependency of the minimum level of rainfall duration and intensity likely to result in shallow landslides and debris flows established by Nel Caine in 1980. The rainfall intensity–duration (ID) values were plotted in logarithmic coordinates, and it was established that with increased rainfall duration, the minimum average intensity likely to trigger shallow slope failures decreases linearly, in the range of durations from 10 min to 35 days. The minimum ID for the possible initiation of shallow landslides and debris flows was determined. The threshold curve was obtained from the rainfall data using an objective statistical technique. To cope with differences in the intensity and duration of rainfall likely to result in shallow slope failures in different climatic regions, the rainfall information was normalized to the mean annual precipitation and the rainy-day normal. Climate information was obtained from the global climate dataset compiled by the Climate Research Unit of the East Anglia University. The obtained global ID thresholds are significantly lower than the threshold proposed by Caine (Geogr Ann A 62:23–27, 1980), and lower than other global thresholds proposed in the literature. The new global ID thresholds can be used in a worldwide operational landslide warning system based on global precipitation measurements where local and regional thresholds are not available..  相似文献   

A refined fish consumption model for lactating Cape fur seals (Arctocephalus pusillus pusillus), based on scat analyses     

Mecenero  Silvia; Kirkman  Stephen P.; Roux  Jean-Paul 《ICES Journal of Marine Science》2006,63(8):1551-1566

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Revision of the planktonic foraminiferal biostratigraphy of the Voirons Flysch (Chablais Prealps,Haute-Savoie,France)     

Jérémy Ragusa  Lina Maria Ospina-Ostios  Silvia Spezzaferri  Pascal Kindler 《Swiss Journal of Geoscience》2018,111(3):461-473

The ages obtained from planktonic foraminiferal assemblages retrieved from two exposures in the Gurnigel Flysch and from the re-examination of similar material gathered by previous researchers from the Voirons Flysch reveal only minor discrepancies with previous studies based on nannofossil biostratigraphy. In contrast, major divergences between this work and previous studies on the Voirons Flysch also based on planktonic foraminifera have been identified. They are generally related to distinct approaches in species classification and the use of different zonal schemes. Based on our data, the age of the Voirons Flysch extends from the Early Eocene (planktonic foraminiferal zone P7) to the Middle Eocene (planktonic foraminiferal zone P12). Contrasting with claims made in earlier studies, no specimen of Late Eocene or Early Oligocene age has been observed in the revised material. However, we cannot exclude a younger age (possibly Late Eocene) for the upper portion of this flysch from which we did not revise any sample. Thus, more research and sampling are needed to resolve this question. The palaeogeographic origin of the Voirons-Wägital complex as well as the sedimentation history of these flyschs need now to be re-evaluated in light of this revised biostratigraphic data.  相似文献   

High-resolution monitoring of water temperature and oxygen concentration in Lake Murten (Switzerland)     

Akram El Kateb  Andres Rüggeberg  Claudio Stalder  Christoph Neururer  Silvia Spezzaferri 《Swiss Journal of Geoscience》2018,111(3):501-510

Lake Murten is located in the Lake District in western Switzerland and so far, it has been poorly investigated. The Environmental Service of Fribourg (SEn) has monitored this lake once a month for several years by water profiles (water temperature, pH, dissolved oxygen, conductivity) at its deepest part. The SEn identified the stratification of water masses as one of the main causes for oxygen consumption in the hypolimnion. In the present study, a Lander System was deployed in Lake Murten from April to September 2015 at 20 m depth at the northwestern part of the lake to monitor water temperature and dissolved oxygen at higher resolution (30 s interval). These records were compared with time series of atmospheric parameters like atmospheric temperature, wind speed and precipitation. A clear correlation of lake temperatures with wind speed was observed during the Spring and Autumn. The water mass stratification evolved through the season and reached its peak during Summer, preventing surface turbulences to reach the deeper part (20 m) of the water column and to partially oxygenate the metalimnion.  相似文献   

SwissSed: past,present, and future trends in Swiss sedimentology     

Peter Homewood  André Strasser  Silvia Spezzaferri  Anneleen Foubert 《Swiss Journal of Geoscience》2018,111(3):377-382

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Biostratigraphy of large benthic foraminifera from Hole U1468A (Maldives): a CT-scan taxonomic approach     

Giovanni Coletti  Stephanie Stainbank  Alessio Fabbrini  Silvia Spezzaferri  Anneleen Foubert  Dick Kroon  Christian Betzler 《Swiss Journal of Geoscience》2018,111(3):523-536

Large benthic foraminifera are important components of tropical shallow water carbonates. Their structure, developed to host algal symbionts, can be extremely elaborate and presents stratigraphically-significant evolutionary patterns. Therefore their distribution is important in biostratigraphy, especially in the Indo-Pacific area. To provide a reliable age model for two intervals of IODP Hole U1468A from the Maldives Inner-Sea, large benthic foraminifera have been studied with computed tomography. This technique provided 3D models ideal for biometric-based identifications, allowing the upper interval to be placed in the late middle-Miocene and the lower interval in the late Oligocene.  相似文献   

Testing the public’s response to receiving severe flood warnings using simulated cell broadcast     

Smith  Kate R.  Grant  Silvia  Thomas  Robert E. 《Natural Hazards》2022,112(2):1611-1631

Natural Hazards - European Governments must implement a public alerting system to reach mobile phone users affected by major emergencies and disasters by June 2022. Cell Broadcast is used to issue...  相似文献