496 research outputs found
Detection and characterization of transient forcing episodes affecting earthquake activity in the Aleutian Arc system
No full textAbstract not availableT. Reverso, D. Marsan, A. Helmstette
Ortolan pénaliste, l’influence de l’œuvre d’Ortolan sur la science criminelle contemporaine in Le « grand » Ortolan, juriste toulonnais, français et européen, DI MANNO (T.) et REVERSO (L.) (dir.),
No full textDI MANNO (T.) et REVERSO (L.) (dir.),International audienc
Background seismicity in Boso Peninsula, Japan: long-term acceleration, and relationship with slow slip events
No full textSlow slip events (SSEs) in subduction zones can trigger earthquake swarms, especially at shallow depth. The monitoring of seismicity rates has therefore the potential to help detect and characterize SSEs, and transient changes in coupling. However, the relationship between seismicity rate and slow slip rate during a SSE is unknown and made complicated by aftershock triggering within the swarm. Here we propose to complement geodetic methods with an objective measure of the seismicity rate that is directly associated with changes in slip rate. We show that this measure, applied to known occurrences of SSEs in the Boso area, Japan, yields an estimate, albeit indirect, of their seismic moment, hence their slip rate. We finally prove that the background rate in Boso has been accelerating since 1990; this explains previous observations of the shortening of the recurrence time between SSEs in Boso, that clearly predate the 2011 Mw9.0 Tohoku-Oki earthquake.T. Reverso, D. Marsan, A. Helmstetter and B. Enesc
Slow slip and aseismic deformation episodes associated with the subducting Pacific plate offshore Japan, revealed by changes in seismicity
No full textVersion of Record online: 17 SEP 2013[1] Aseismic phenomena, including slow slip, can alter the surrounding seismicity. We here investigate how seismicity can be used in order to reveal episodes of aseismic deformation. An objective method is proposed that accounts for both earthquake interactions and transient loading. Applying it to the 1990–2011 (pre-Tohoku) seismicity of the Japan subduction zone, we find several significant instances of aseismic transients. Small-scale and short-duration transients are favored updip of the subducting plate. Large-scale transients are mostly observed offshore Ibaraki prefecture, in a partly decoupled zone that extends downdip. The four most intense of such transients have occurred periodically every 5.9years and are likely due to slow-slip episodes. Other aseismic phenomena, including possible fluid intrusion in the outer rise, are also detected. Finally, the seismicity in January and February 2011, close to the epicenter of the megathrust Tohoku earthquake, is found to be due to aseismic loading, confirming previous studies, although this transient is only one among others and is not the most intense nor the most significant for the 21year long period studied here.D. Marsan, T. Reverso, A. Helmstetter, and B. Enesc
A Hybrid ETAS‐Coulomb Approach to Forecast Spatiotemporal Aftershock Rates
No full textAftershock sequences are an ideal testing ground for operational earthquake forecasting models as they contain relatively large numbers of earthquakes clustered in time and space. To date, most successful forecast models have been statistical, building on empirical observations of aftershock decay with time and earthquake size frequency distributions. Another approach is to include Coulomb stress changes from the mainshock which influence the spatial location of the aftershocks although these models have generally not performed as well as the statistical ones. Here we develop a new hybrid Epidemic‐Type Aftershock Sequence (ETAS)/Coulomb model which attempts to overcome the limitations of its predecessors by redistributing forecast rate from negatively to positively stressed regions based on observations in the model learning period of the percentage of events occurring in those positively stressed regions. We test this model against the 1992 Landers aftershock sequence using three different ETAS kernels and five different models for slip in the Landers earthquake. We also consider two variations of rate redistribution, one based on a fixed value and the other variable depending on the percentage of aftershocks observed in positively stressed Coulomb regions during the learning period. We find that the latter model performs at least as well as ETAS on its own in all tests and better than ETAS in 14 of 15 tests in which we forecast successive 24‐hr periods. Our results suggest that including Coulomb stress changes can improve operational earthquake forecasting models.T. Reverso, S. Steacy, D. Marsa
Projeto de participação comunitária e desenvolvimento social do Conjunto Habitacional Vila Cachoeira: a operacionalização sob a ótica dos moradores
No full textTCC (graduação) - Universidade Federal de Santa Catarina, Centro Sócio Econômico, Curso de Serviço Social
La Concordia y Parque T. A. Dehesa, Orizaba, Méx.
No full textTarjeta postal ilustrada con bordes, blanco y negro, 9 cm x 14 cm. Orientación horizontal. Reverso dividido.Vista en perspectiva de la Parroquia [Santa María de Guadalupe] La Concordia en Orizaba, Veracruz, principios del siglo XX. Se observa una mujer en el camino de terracería, del lado derecho está el Parque T. A. Dehesa [ahora Parque La Concordia-Francisco I. Madero].Transcripción de textos en el anverso: con texto impreso [tinta blanca sobre fondo oscuro] -- "LA CONCORDIA Y PARQUE T. A. DEHESA. / ORIZABA, MEX. / Asegurada la propiedad Juan D. Vasallo-Fotografo" | Con texto escrito [tinta blanca] -- "D. 3."Transcripción de textos en el reverso: con texto impreso -- "POST CARD / FOR MESSAGE / FOR ADDRESS ONLY / ARTUR / PLACE STAMP HERE" | Con texto escrito -- "1892"Con sello en el reverso [tinta azul] -- "ACADEMIA NACIONAL DE CIENCIAS ANTONIO ALZATE MEXICO CALLE DE JUSTO SIERRA 19."Características de digitalización: equipo EPSON Scan GT-20000; resolución: 1600 ppp; formato de archivo: TIFF; profundidad de bits: 24; unidad de compresión: sin compresión; perfil de color: RGB.Características de edición: se colocó una pleca en color negro sobre la que se agregó la información del fondo documental al que pertenece así como la institución que lo resguarda. Se redimensionaron los archivos originales a 300 ppp con Adobe Photoshop CC 2018, se convirtieron a formato JPEG 2000 con compresión sin pérdida a partir de XnView Classic for Windows
Verso-reverso em João Cabral do Melo Neto : Museu de tudo e depois
No full textVerso-reverso em João Cabral de Melo Neto Museu de tudo e depois discuss the
question of depersonalization of the writing in the brazilian poet s work, focusing Museu de
tudo, book the author defines as a new experience . Taking it as starting point for the retaken
of I in his poetry, two moments are identified: before and after Museu de tudo. In the second
moment, the ambiguous relation among the desire of impersonality and memorialistic
substance, lyricism and antilyricism, reason and emotion becomes more evident.Em Verso-reverso em João Cabral de Melo Neto Museu de tudo e depois, discute-se
a questão da despersonalização da escrita na obra do poeta brasileiro, colocando-se em foco
Museu de tudo, livro que o autor define como uma experiência nova . Tomando-o como
ponto de partida para a retomada do eu na poética cabralina, identificam-se dois momentos na
obra de João Cabral: antes e depois de Museu de tudo. No segundo momento, percebe-se com
maior clareza a relação ambígua entre o desejo de impessoalidade e a matéria memorialística,
lirismo e antilirismo, razão e emoção
Mazatlán, Sinaloa, México
No full textI.O. En el reverso: "TIMO T. PAJUNEN PD BOT 243 PT. RICHMOND, Ca. 94801" "timo tame Pajunen" mazatlán, Sinaloa, Mexico, july 1976"
MEDUSA AO REVERSO: UMA JORNADA ENTRE MITOS, PEDRAS E DANÇAS
No full textThis article is one of the academic amplifications resulting from a doctor research in Arts of the Scene by UNICAMP, conducted by the author herself. It is a critical account of the experience of a process of creation in dance, in which the interpreter-creator investigates from the body’s own experience the intrinsic relations between body; mythology and sculptural images.The scenic work is poetically entitled Medusa on Reverse, after all one of the motes of creation deals, precisely, with the sculptural image, more specifically works of the french sculptress Camille Claudel, which, poetically, converges the sculptures (stones) into a danced movement (in contrast to the myth of Medusa that transforms living bodies into stone sculptures). O presente artigo é uma das amplificações acadêmicas resultantes de uma pesquisa de doutoramento em Artes da Cena pela UNICAMP, realizada pela própria autora. Trata-se de um relato crítico da vivência de um processo de criação em dança, no qual a intérprete-criadora investiga a partir da própria vivência corporal as relações intrínsecas entre corpo; mitologia e imagens escultóricas.O trabalho cênico é intitulado poeticamente de Medusa ao Reverso, afinal um dos motes de criação trata, justamente, da imagem escultórica, mais especificamente obras da escultora francesa Camille Claudel, que, de forma poética, converge as esculturas (pedras) em movimento dançado (diversamente ao mito da Medusa que transforma corpos vivos em esculturas de pedras).
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