Simultaneous meteorological tsunamis and storm surges at Buenos Aires coast,southeastern South America     

Walter C. Dragani  Enrique E. D’Onofrio  Fernando Oreiro  Guadalupe Alonso  Mónica Fiore  Walter Grismeyer 《Natural Hazards》2014,74(1):269-280

Meteorological tsunamis are frequently observed in different tide stations at the southeastern coast of South America. They are associated with the occurrence of atmospheric gravity waves during the passages of cold fronts over the Buenos Aires Province continental shelf. On the other hand, storm surges are also frequent in the region, and they are associated with strong and persistent southerlies, which are also frequent during cold front passages. The impact of meteorological tsunamis in coastal erosion and in the statistics of storm surge trends is discussed in this paper. For this study, fifteen meteorological tsunamis (with maximum wave heights higher than 0.20 m), seven of them simultaneous to the occurrence of storm surge events (with extreme levels higher than |±0.60 m|), are selected from April 2010 to January 2013. The impact of meteorological tsunamis in the storm erosion potential index (SEPI) is evaluated. Not significant differences are obtained between SEPI calculated with and without filtering the meteorological tsunami signal from the storm surge data series. Moreover, several experiments are carried out computing SEPI from synthetic sea level data series, but very low changes (lower than 4 %) are also obtained. It is concluded that the presence of moderate meteorological tsunamis on sea level records would not enhance this index at the Buenos Aires Province coast. On the other hand, taking into account that meteorological tsunamis can reach up the 20–30 % of the storm surge height, it was concluded that the statistics of storm surge trends (and their uncertainties) should be revised for Mar del Plata data series.  相似文献   

‘The Geology of the Gulf of Cādiz＇ Symposium held on Ⅵ Geological Congress of Spain     

Dr. Luis Somoza Dr. Juan Tomas Vazquez 《《幕》》2005,28(3):217-218

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Identification of Caribbean basin hurricanes from Spanish documentary sources     

Ricardo García-Herrera  Luis Gimeno  Pedro Ribera  Emiliano Hernández  Ester González  Guadalupe Fernández 《Climatic change》2007,83(1-2):55-85

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An umbral brightening associated with a two-ribbon flare     

M. Vazquez  F. Herrera 《Solar physics》1979,64(2):329-331

We report an unusual case of a two-ribbon flare associated with an umbral brightening in a magnetically unipolar region.  相似文献   

Simulation of acid rain weathering effect on natural and artificial carbonate stones     

S. Eyssautier-Chuine  B. Marin  C. Thomachot-Schneider  G. Fronteau  A. Schneider  S. Gibeaux  P. Vazquez 《Environmental Earth Sciences》2016,75(9):748

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An Overview of Geodetic Volcano Research in the Canary Islands     

José Fernández  Pablo J. González  Antonio G. Camacho  Juan F. Prieto  Guadalupe Brú 《Pure and Applied Geophysics》2015,172(11):3189-3228

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DNA barcode,taxonomic and ecological notes for the identification of the invasive amphipod Monocorophium acherusicum (Costa, 1851)     

Mariano J. Albano  Carlos Rumbold  Ignacio L. Chiesa  Guadalupe Vazquez  Eduardo D. Spivak  Sandra M. Obenat 《新西兰海洋与淡水研究杂志》2019,53(1):15-32

We report the occurrence of the invasive amphipod Monocorophium acherusicum in Mar del Plata port, Argentina, using morphological and molecular analysis and estimated mean abundance to detect monthly variations of this population. We compared M. acherusicum morphology with that of M. insidiosum and Crassicorophium bonelli, the two most similar locally occurring species, to establish the diagnostic characteristics for the correct identification of them; moreover, we provide some taxonomic notes about others corophiids regionally distributed. M. acherusicum were collected in a subtidal biofouling community and its mean abundance was maximum in summer. In the molecular analysis, the maximum-likelihood tree showed that specimens from Mar del Plata were clustered with M. acherusicum specimens from GenBank and Boldsystems. We support and confirm the species identity in Mar del Plata port using DNA barcoding and with taxonomic methods.  相似文献   

Erratum to: Zircon-scale insights into the history of a Supervolcano,Bishop Tuff,Long Valley,California, with implications for the Ti-in-zircon geothermometer     

Mary R. Reid  Jorge A. Vazquez  Axel K. Schmitt 《Contributions to Mineralogy and Petrology》2011,161(2):313-314

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Magma mixing and the generation of isotopically juvenile silicic magma at Yellowstone caldera inferred from coupling 238U–230Th ages with trace elements and Hf and O isotopes in zircon and Pb isotopes in sanidine     

Mark E. Stelten  Kari M. Cooper  Jorge A. Vazquez  Mary R. Reid  Gry H. Barfod  Josh Wimpenny  Qing-zhu Yin 《Contributions to Mineralogy and Petrology》2013,166(2):587-613

The nature of compositional heterogeneity within large silicic magma bodies has important implications for how silicic reservoirs are assembled and evolve through time. We examine compositional heterogeneity in the youngest (~170 to 70 ka) post-caldera volcanism at Yellowstone caldera, the Central Plateau Member (CPM) rhyolites, as a case study. We compare ²³⁸U–²³⁰Th age, trace-element, and Hf isotopic data from zircons, and major-element, Ba, and Pb isotopic data from sanidines hosted in two CPM rhyolites (Hayden Valley and Solfatara Plateau flows) and one extracaldera rhyolite (Gibbon River flow), all of which erupted near the caldera margin ca. 100 ka. The Hayden Valley flow hosts two zircon populations and one sanidine population that are consistent with residence in the CPM reservoir. The Gibbon River flow hosts one zircon population that is compositionally distinct from Hayden Valley flow zircons. The Solfatara Plateau flow contains multiple sanidine populations and all three zircon populations found in the Hayden Valley and Gibbon River flows, demonstrating that the Solfatara Plateau flow formed by mixing extracaldera magma with the margin of the CPM reservoir. This process highlights the dynamic nature of magmatic interactions at the margins of large silicic reservoirs. More generally, Hf isotopic data from the CPM zircons provide the first direct evidence for isotopically juvenile magmas contributing mass to the youngest post-caldera magmatic system and demonstrate that the sources contributing magma to the CPM reservoir were heterogeneous in ¹⁷⁶Hf/¹⁷⁷Hf at ca. 100 ka. Thus, the limited compositional variability of CPM glasses reflects homogenization occurring within the CPM reservoir, not a homogeneous source.  相似文献   

Differential rotation and the spot zones     

Franz-Ludwig Deubner  Manuel Vazquez 《Solar physics》1975,43(1):87-90

A minimum of angular velocity is not found at the equator as suggested by Gilman, but at a latitude of 6° in both hemispheres.  相似文献