Zobrazeno 1 - 10
of 172
pro vyhledávání: '"H. Hansteen"'
Autor:
Sean Whitley, Ralf Halama, Ralf Gertisser, Thor H. Hansteen, Matthias Frische, Torsten Vennemann
Publikováno v:
Volcanica, Vol 7, Iss 2, Pp 421-446 (2024)
Plutonic xenoliths from volcanic arcs provide unique insights into transcrustal magmatic systems in subduction zone settings. At Santorini volcano in the Central Aegean Volcanic Arc (Greece), plutonic xenoliths occur throughout a sequence of lavas an
Externí odkaz:
https://doaj.org/article/87318279a10a415d93fb962ed4b08d50
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 25, Iss 9, Pp n/a-n/a (2024)
Abstract We compile an extensive catalog comprising geochemistry and ages of Cenozoic volcanic provinces in the Mediterranean region, distinguishing between three groups according to the geochemistry of magmatic rocks: intraplate (IVP), subduction‐
Externí odkaz:
https://doaj.org/article/854d19ff5e5940cd88b46fb1ae6cb3c0
Autor:
Jens Karstens, Gareth J. Crutchley, Thor H. Hansteen, Jonas Preine, Steven Carey, Judith Elger, Michel Kühn, Paraskevi Nomikou, Florian Schmid, Giacomo Dalla Valle, Karim Kelfoun, Christian Berndt
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-10 (2023)
Abstract Volcanic eruptions can trigger tsunamis, which may cause significant damage to coastal communities and infrastructure. Tsunami generation during volcanic eruptions is complex and often due to a combination of processes. The 1650 eruption of
Externí odkaz:
https://doaj.org/article/915984ebf314490297c9bda650659e10
Autor:
Tom Kwasnitschka, Thor H. Hansteen, Ricardo S. Ramalho, Colin W. Devey, Andreas Klügel, Lisa K. Samrock, Jo‐Anne Wartho
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 25, Iss 3, Pp n/a-n/a (2024)
Abstract The Cabo Verde Archipelago is related to a mantle plume located close to the rotational pole of the African Plate. It consists of islands and seamounts arranged in a horseshoe‐shaped pattern open to the west, thus forming two volcanic chai
Externí odkaz:
https://doaj.org/article/247a79430aa94e6da1f37cf2bce3696c
Autor:
Juan Martínez-Sykora, Jaime de la Cruz Rodríguez, Milan Gošić, Alberto Sainz Dalda, Viggo H. Hansteen, Bart De Pontieu
Publikováno v:
The Astrophysical Journal Letters, Vol 943, Iss 2, p L14 (2023)
The heating of the chromosphere in internetwork regions remains one of the foremost open questions in solar physics. In the present study, we tackle this old problem by using a very-high-spatial-resolution simulation of quiet-Sun conditions performed
Externí odkaz:
https://doaj.org/article/d6df9ccf440643ec9e9e5f18bd48179f
Autor:
S. Arellano, B. Galle, F. Apaza, G. Avard, C. Barrington, N. Bobrowski, C. Bucarey, V. Burbano, M. Burton, Z. Chacón, G. Chigna, C. J. Clarito, V. Conde, F. Costa, M. De Moor, H. Delgado-Granados, A. Di Muro, D. Fernandez, G. Garzón, H. Gunawan, N. Haerani, T. H. Hansteen, S. Hidalgo, S. Inguaggiato, M. Johansson, C. Kern, M. Kihlman, P. Kowalski, P. Masias, F. Montalvo, J. Möller, U. Platt, C. Rivera, A. Saballos, G. Salerno, B. Taisne, F. Vásconez, G. Velásquez, F. Vita, M. Yalire
Publikováno v:
Earth System Science Data, Vol 13, Pp 1167-1188 (2021)
Volcanic plumes are common and far-reaching manifestations of volcanic activity during and between eruptions. Observations of the rate of emission and composition of volcanic plumes are essential to recognize and, in some cases, predict the state of
Externí odkaz:
https://doaj.org/article/eb4041c27ee74fc38a71a050bef9894c
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
The occurrence of mantle-derived peridotite xenoliths in phonolitic melts is a rare phenomenon, and is commonly ascribed to a mantle origin of the phonolite. The alternative possibility, that xenoliths are transported into evolving phonolite melts by
Externí odkaz:
https://doaj.org/article/6b03a64426574f369b9791af4530ca55
Autor:
Juan Martínez-Sykora, Bart De Pontieu, Viggo H. Hansteen, Paola Testa, Q. M. Wargnier, Mikolaj Szydlarski
Publikováno v:
The Astrophysical Journal, Vol 949, Iss 2, p 112 (2023)
The ponderomotive force has been suggested to be the main mechanism to produce the so-called first ionization potential (FIP) effect—the enrichment of low-FIP elements observed in the outer solar atmosphere, in the solar wind, and in solar energeti
Externí odkaz:
https://doaj.org/article/61f42ea2d5354c38a2e9d190d7117679
Autor:
Viggo H. Hansteen, Juan Martinez-Sykora, Mats Carlsson, Bart De Pontieu, Milan Gošić, Souvik Bose
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 2, p 131 (2023)
The Mg ii h and k lines are among the best diagnostic tools of the upper solar chromosphere. This region of the atmosphere is of particular interest, as it is the lowest region of the Sun’s atmosphere where the magnetic field is dominant in the ene
Externí odkaz:
https://doaj.org/article/99deab86000a4f25b36edf163aaf749f
Autor:
Navdeep K. Panesar, Viggo H. Hansteen, Sanjiv K. Tiwari, Mark C. M. Cheung, David Berghmans, Daniel Müller
Publikováno v:
The Astrophysical Journal, Vol 943, Iss 1, p 24 (2023)
We report high-resolution, high-cadence observations of five small-scale coronal jets in an on-disk quiet Sun region observed with Solar Orbiter’s EUI/HRI _EUV in 174 Å. We combine the HRI _EUV images with the EUV images of SDO/AIA and investigate
Externí odkaz:
https://doaj.org/article/1b21b6ed9eb642d1b7e455e54b6687a4