|
|
Houdier S., Perrier S., Dominé F., Cabanes F.A., Egagneux L., Grannas A.M., Guimb. (2002). Acetaldehyde and acetone in the Arctic snowpack during the ALERT2000 field campaign. Snowpack composition, incorporation processes and atmospheric impact. Atmospheric environment, 36, 2609–2618.
|
|
|
|
A. T. Ringler, R. E. Anthony, R. C. Aster, C. J. Ammon, S. Arrowsmith, H. Benz, C. Ebeling, A. Frassetto, W.-Y. Kim, P. Koelemeijer, H. C. P. Lau, V. Lekić, J. P. Montagner, P. G. Richards, D. P. Schaff, M. Vallée, W. Yeck. (2022). Achievements and Prospects of Global Broadband Seismographic Networks After 30 Years of Continuous Geophysical Observations (Vol. 60).
Abstract: Global seismographic networks (GSNs) emerged during the late nineteenth and early twentieth centuries, facilitated by seminal international developments in theory, technology, instrumentation, and data exchange. The mid- to late-twentieth century saw the creation of the World-Wide Standardized Seismographic Network (1961) and International Deployment of Accelerometers (1976), which advanced global geographic coverage as seismometer bandwidth increased greatly allowing for the recording of the Earth's principal seismic spectrum. The modern era of global observations and rapid data access began during the 1980s, and notably included the inception of the GEOSCOPE initiative (1982) and GSN (1988). Through continual improvements, GEOSCOPE and the GSN have realized near-real time recording of ground motion with state-of-art data quality, dynamic range, and timing precision to encompass 180 seismic stations, many in very remote locations. Data from GSNs are increasingly integrated with other geophysical data (e.g., space geodesy, infrasound and Interferometric Synthetic Aperture Radar). Globally distributed seismic data are critical to resolving crust, mantle, and core structure; illuminating features of the plate tectonic and mantle convection system; rapid characterization of earthquakes; identification of potential tsunamis; global nuclear test verification; and provide sensitive proxies for environmental changes. As the global geosciences community continues to advance our understanding of Earth structure and processes controlling elastic wave propagation, GSN infrastructure offers a springboard to realize increasingly multi-instrument geophysical observatories. Here, we review the historical, scientific, and monitoring heritage of GSNs, summarize key discoveries, and discuss future associated opportunities for Earth Science.
Programme: 133
|
|
|
|
Dubois Philippe, Antonio Agüera, Nadia Ameziane, Marie Collard, Bruno Danis, Bruno David, Frank Dehairs, Chantal De Ridder, Sarah Di Giglio, Marc Eléaume, Jean-Pierre Féral, Jérôme Fournier, Cyril Gallut, Margot Gonthier-Maurin, Philip Jane, Christian Marschal, Loïc Michel, Sébastien Motreuil, Francesca Pasotti, Ricardo Sahade, Thomas Saucède, Ann Vanreusel. (2017). Acid-base physiology of Antarctic and Sub-antarctic sea urchins and their resilience to ocean acidification. Bachelor's thesis, , .
Abstract: Increasing atmospheric carbon dioxide concentration alters the chemistry of the oceans towards more acidic conditions. Polar oceans are particularly affected due to their low temperature, low carbonate content and mixing patterns, for instance upwellings. Echinodermata were hypothesized to be at risk due to their high-magnesium calcite skeleton. However, tolerance to ocean acidification (OA) in metazoans is first linked to acid–base regulation capacities of the extracellular fluids. No information on this was available for Antarctic echinoderms and inference from temperate and tropical studies needed support. We investigated the acid–base status of 9 species of sea urchins (3 cidaroids, 2 regular euechinoids and 5 irregular brooding euechinoids) collected in the frame of the ANTXXIX/3 Polarstern campaign, the vERSO BELSPO project and the REVOLTA and PROTEKER IPEV projects. It appears that Antarctic regular euechinoids are equipped with similar acid–base regulation systems as tropical and temperate regular euechinoids and are able to compensate their extracellular pH (pHe) when facing OA by increasing the extracellular bicarbonate concentration. Cidaroids have an acid–base status similar to that of tropical cidaroids, characterized by very low pHe. Therefore, Antarctic cidaroids will most probably not be affected by decreasing seawater pH, the pH drop linked to OA being negligible in comparison with their naturally low pHe. Irregular euechinoids regulate their pHe when facing OA through an unknown mechanism. The pH of sea water in the brooding chambers depends on the pH of the surrounding sea water and is further reduced in presence of calcified juveniles. This suggests that these juveniles will endure worse acidification conditions and might be possibly at risk. Combining these results with the resilience of Antarctic euechinoid larvae suggests that most of these organisms might not be the expected victims of ocean acidification although the impact on brooded juveniles of irregular euechinoids should be further investigated
Programme: 1044
|
|
|
|
Dubois P, Agüera A, Ameziane N, Collard M, Danis B, David B, Dehairs F, De Ridder C, Di Giglio S, Eléaume M, Féral J-p, Fournier J, Gallut C, Gonthier-maurin M, Jane P, Marschal C, Michel L, Motreuil S, Pasotti F, Sahade R, Saucède T And Vanreusel A. (2018). Acid-base physiology of antarctic and subantarctic sea urchins and their resilience to ocean acidification..
|
|
|
|
Sarah Di Giglio, Antonio Agüera, Bruno Danis, Marc Eléaume, Jérôme Fournier-Sowinski, Cyril Gallut, Philip Jane, Loïc Michel, Francesca Pasotti, Ricardo Sahade, Ann Vanreusel, Philippe Dubois. (2017). Acid-base physiology of the Antarctic sea urchin Sterechinus neumayeri: differences according to environmental conditions?.
|
|
|
|
Legrand M., Leopold A. & Domine F. (1996). Acidic gases (HC1, HF, HCOOH, and CH3COOH): a review of ice core data and some preliminary discussions on their air-snow relationships. (Vol. 43).
Abstract: NATO ASI Series I
Programme: 159
|
|
|
|
Bretagnolle V. (1996). Acoustic Communication in a Group of Nonpasserine Birds, the Petrels. Ecology and Evolution of Acoustic Communication in Birds, , 160–177.
|
|
|
|
Lengagne T., Aubin T., Jouventin P. & Lauga J. (1999). Acoustic communication in a king penguin colony:importance of bird location within the colony and of the body position of the listener. Polar Biol., 21, 262–268.
|
|
|
|
Charrier I., Mathevon N. & Jouventin P. (2001). Acoustic communication in black-headed gull colony: how do chicks identify their parents? Ethology, 107, 961–974.
|
|
|
|
Aubin, T., Mathevon, N., Staszewski, V. & Boulinier, T. (2007). Acoustic communication in the Kittiwake Rissa tridactyla: potential cues for sexual and individual signatures in long calls. Polar Biol., 30, 1027–1033.
|
|
