Areas found at plate boundaries are characterized by the presence of seismic, volcanic and geothermal activity. These processes are enhanced by the circulation of hydrothermal fluids in the crust, which transport volatiles from the deep crust or mantle to the surface. Certainly not limited to plate boundaries, as magma rises from depth, decreasing pressure allows volatile species to partition to the gas phase. Bubbles form, grow, coalesce and gases start to flow through vesiculated magma. Eventually, fluids escape towards the surface using tectonic structures and are released in the atmosphere, in some cases diffused through a soil or bubbling through a water pool, in other cases forming large plumes or explosive eruption columns. Fluids play an important role in earthquake generation.
Geochemical and isotope composition of gases deriving from different settings can trace sources and chemical and physical processes, providing information about deep earth. Moreover, volatiles play a key role in magma transport and have significant impact on the style and timing of volcanic eruptions. In addition, noble gases deriving from the deep earth can provide important information about their crust or mantle origin because these gases hardly react with other materials during migration. While carbon dioxide is one of the major constituents in volcanic/geothermal areas, methane, dominating sedimentary low heat flow areas, is often linked to subsurface hydrocarbon reservoirs that due to tectonic discontinuities are released in the atmosphere. Furthermore, sulfur dioxide emissions that take place in volcanic environments can cause acid rain, influence aerosol formation and, if an eruption column reaches the stratosphere, cause global dimming and a decrease in Earth’s surface temperatures for years. Similarly, halogens can dramatically impact proximal ecosystems, influence the oxidation capacity of the troposphere and alter the stratospheric ozone layer. Gas composition and flux may change with time, reflecting variations in the system. Measuring gases therefore constitutes a powerful tool for monitoring and understanding Earth.
This session aims to merge different geo-disciplines and bring together researchers interested in the comprehension of the degassing processes that take place in various geodynamic regimes. Furthermore, identify the impact that the emissions can have on terrestrial environment, atmospheric composition, climate and human health at various temporal and spatial scales. We invite contributions discussing novel measurement techniques, field measurements, direct and remote ground- and space-based observations and modeling studies of degassing can provide new insights into volcanic, tectonic and atmospheric processes on local and global scales.

Co-organized as AS3.29, co-sponsored by EAG
Convener: Nicole Bobrowski | Co-conveners: Giovanni Chiodini, Kyriaki Daskalopoulou, Artur Ionescu, Fátima Viveiros, Carlo Cardellini, Marcello Liotta, Julia Arndt
| Tue, 09 Apr, 08:30–10:15, 14:00–18:00
Room D1
| Attendance Wed, 10 Apr, 08:30–10:15
Hall X2

Attendance time: Wednesday, 10 April 2019, 08:30–10:15 | Hall X2

Chairperson: Carlo Cardellini, Nicole Bobrowski
X2.344 |
Boglarka Kis, Artur Ionescu, Szabolcs Harangi, Calin Baciu, Laszlo Palcsu, Carlo Cardellini, and Zoltán Imecs
X2.345 |
Roland Szalay, Boglárka Mercédesz Kis, Szabolcs Harangi, László Palcsu, Calin Baciu, Cristian Pop, Sergio Calabrese, Marcello Bitetto, and Alessandro Aiuppa
X2.346 |
Rapid variations of CO2∕H2S ratio in the fumarolic plume of Pisciarelli (Campi Flegrei volcano, Italy)
Giancarlo Tamburello, Stefano Caliro, Marcello Bitetto, Gaetano Giudice, Rosario Avino, Antonio Carandente, Dmitri Rouwet, Tullio Ricci, Alessandra Sciarra, Alessandro Aiuppa, Emanuela Bagnato, and Carmine Minopoli
X2.348 |
Eleazar Padrón, Mar Alonso, Cecilia Morales, Gladys V. Melián, María Asensio-Ramos, Pedro A. Hernández, Catarina Silva, Fátima Viveiros, and Nemesio M. Pérez
X2.349 |
Pedro A. Hernández, Takeshi Sagiya, Fátima Rodríguez, Mar Alonso, José David González, Gladys V. Melián, Eleazar Padrón, and Nemesio M. Pérez
X2.350 |
Raquel Domínguez-Pérez, Sarah E. Kylborg, Joseph P. Green, Cecilia Morales, Victor Ortega, Claudia Rodríguez-Pérez, Laura Acosta, Lucía Sáez, William Hernández, Alba Martín, Pedro A. Hernández, and Nemesio M. Pérez
X2.351 |
Silvia Rayo-Mato, Emma Harris, Chanel Vidal, Fátima Rodríguez, Gladys V. Melián, Eleazar Padrón, María Asensio-Ramos, José Barrancos, Germán D. Padilla, Pedro A. Hernández, and Nemesio M. Pérez
X2.352 |
Gladys V. Melián, María Asensio-Ramos, Nádia Gonçalves, Marta García-Merino, Duarte Barreto, Pedro A. Hernández, Ana Luísa Fernandes, Susana Prada, José Barrancos, and Nemesio M. Pérez
X2.353 |
Violeta T. Albertos, Jesica D. Hopson, Sonia V. Silva, José M. Pereira, Eleazar Padrón, Gladys V. Melián, Pedro A. Hernández, and Nemesio M. Pérez
X2.354 |
Víctor Ortega, Elinor S. Meredith, Kyra Cutler, Eleazar Padrón, María Asensio-Ramos, Gladys V. Melián, Pedro A. Hernández, and Nemesio M. Pérez
X2.355 |
Laura Acosta, Natasha E. Smellie, Lydia J. Whittaker, Eleazar Padrón, Fátima Rodríguez, Germán D. Padilla, Gladys V. Gladys V., José Barrancos, María Asensio-Ramos, Pedro A. Hernández, and Nemesio M. Pérez
X2.356 |
Fátima Rodríguez, Narysse E. R. Palmer, Mitchell Kirshner, Eleazar Padrón, Gladys V. Melián, María Asensio-Ramos, Victor Ortega, Pedro A. Hernández, and Nemesio M. Pérez
X2.357 |
María Cordero, Cecilia Amonte, Gladys V. Melián, Theofilos Toulkeridis, Mar Alonso, Anai Bustos, Eleazar Padrón, María Asensio-Ramos, Pedro A. Hernández, and Nemesio M. Pérez
X2.359 |
Maria Clara Lamberti, Nicolás Vigide, Stefania Venturi, Mariano Agusto, Daniel Yagupsky, Diego Winocur, Hernán Barcelona, María Laura Velez, and Franco Tassi
X2.360 |
Marco Liuzzo, Giovanni Bruno Giuffrida, Sergio Gurrieri, Gaetano Giudice, Vincenzo Francofonte, Santo Cappuzzo, and Luigi Foresta Martin
X2.361 |
Salvatore Giammanco, Antonio Nicolosi, Salvatore Alparone, Pietro Bonfanti, Marco Neri, and Andrea Ursino
X2.362 |
Rachel Whitty, Evgenia Ilyinskaya, Emily Mason, Penny Wieser, Emma Liu, Marie Edmonds, Tamsin Mather, Tamar Elias, Patricia Nadeau, Christoph Kern, David Schneider, and Clive Oppenheimer
X2.363 |
Marcello Liotta, María Martínez Cruz, Arnoldo Ferrufino, Julian Rüdiger, Alexandra Gutmann, Kathia Rojas Cerda, Nicole Bobrowski, and J. Maarten de Moor
X2.364 |
Walter D'Alessandro, Sergio Calabrese, Cinzia Federico, Sergio Bellomo, Lorenzo Brusca, Manfredi Longo, and Edda Elisa Falcone
X2.365 |
Charles M. Balagizi, Marcellin M. Kasereka, Emilio Cuoco, and Marcello Liotta
X2.366 |
Julian Rüdiger, Nicole Bobrowski, Alexandra Gutmann, Marcello Liotta, Maarten de Moor, Rolf Sander, Florian Dinger, Jan-Lukas Tirpitz, Martha Ibarra, Armando Saballas, María Martínez, Elvis Mendoza, John Stix, Juan Valdés, John Castro, and Thorsten Hoffmann
X2.367 |
Alexandra Gutmann, Nicole Bobrowski, Marcello Liotta, and Thorsten Hoffmann
X2.368 |
| presentation
Luke Surl, Tjarda Roberts, and Silmane Bekki
X2.369 |
Nicole Bobrowski, Jonas Kuhn, Maria Clara Lamberti, Mariano Agusto, Sebastian Garcia, Gabriela Velasquez, Claudia Bucarey, Oscar Valderrama, Lukas Tirpitz, and Ulrich Platt
X2.370 |
Studies of gas emissions at two Colombian volcanoes (1985-2018)
Gustavo Garzón, Luisa Fernanda Meza, Viviana Burbano, Santiago Arellano, Bo Galle, Ulrich Platt, and Nicole Bobrowski
X2.371 |
Xochilt Gutiérrez, Nicole Bobrowski, Julian Rüdiger, Thorsten Hoffmann, Eduardo Gutiérrez, Florian Dinger, Francisco Montalvo, and Mirian Villalobos
X2.372 |
Pierre-Jean Gauthier, Séverine Moune, and Olgeir Sigmarsson
X2.373 |
Dario Buttitta, Antonio Caracausi, Lauro Chiaraluce, Rocco Favara, Maurizio Gasparo Morticelli, and Attilio Sulli
X2.374 |
Paolo Randazzo, Antonio Caracausi, Francesco Italiano, Alessandro Aiuppa, and Attilio Sulli
X2.375 |
Kyriaki Daskalopoulou, Walter D’Alessandro, Sergio Calabrese, Carlo Cardellini, Antonina Lisa Gagliano, Artur Ionescu, Stylianos Karakatsanis, Konstantinos Kyriakopoulos, Lorenza Li Vigni, and Cristian Pop
X2.376 |
| Highlight
Antonina Lisa Gagliano, Sergio Calabrese, Walter D'Alessandro, Kyriaki Daskalopoulou, Jacopo Cabassi, Francesco Capecchiacci, Franco Tassi, Maria Bonsignore, Sergio Bellomo, Lorenzo Brusca, Lorenza Li Vigni, Silvia Milazzo, and Gaetano Giudice