On the impact of emotional prosody in announcements: The case of the pre-sequence

International audienc

Prosodic Correlates of Discourse Structure and Emotion in Discourse Markers that Preface Announcements of News

International audienceDiscourse markers serve important structuring functions such as concluding a contribution or resuming a topic. We address whether, along with their role in structuring discourse, discourse markers carry prosodic cues to the emotional valence of upcoming news, perhaps to prepare the listener's emotional reaction. Specifically, we explored the realization of French voilà donc (yeah so) when occurring between an announcement of news and its preface: Je vous appelle au sujet de votre chat qui était malade [preface], voilà donc [discourse marker] il est désormais guéri [announcement] ("I'm calling about your sick cat, yeah so he's now cured"). We recorded 15 speakers reading voicemail messages announcing negative, positive or neutral (e.g., factual) news. We found that the intonation patterns produced with voilà donc correspond to its discursive functions, in line with existing findings, though the choice of pattern did not depend on the emotional valence of the news. Valence was, however, associated with phonetic variation, in that high f0 targets were higher for positive and neutral valence and pitch range was larger for positive valence. This finding suggests that phonetic variation projects the emotional valence of upcoming news even though discourse function primarily determines the choice of intonation pattern

New mafic magma refilling a quiescent volcano: Evidence from He-Ne-Ar isotopes during the 2011-2012 unrest at Santorini, Greece

n 2011-2012 Santorini was characterized by seismic-geodetic-geochemical unrest, which was unprecedented since the most-recent eruption occurred in 1950 and led to fear an eruption was imminent. This unrest offered a chance for investigating the processes leading to volcanic reactivation and the compositional characteristics of involved magma. We have thus analyzed the He-Ne-Ar-isotope composition of fluid inclusions in olivines and clinopyroxenes from cumulate mafic enclaves hosted in cogenetic dacitic lavas of the 1570–1573 and 1925–1928 eruptions of Nea Kameni. These unique data on Aegean volcanism were compared with those of gases collected in quiescent periods and during the unrest. The 3He/4He-ratios (3.1–4.0Ra) are significantly lower than the typical arc-volcano values (R/Ra~7–8), suggesting the occurrence of magma contamination in Santorini plumbing system, which would further modify the 3He/4He-ratio of parental magmas generated in the local metasomatized mantle. The 3He/4He-values of enclaves (3.1–3.6Ra) are comparable to those measured in gases during quiescent periods, confirming that enclaves reflect the He-isotope signature of magma residing at shallow depths and feeding passive degassing. A significant increase in soil CO2 flux from Nea Kameni and anomalous compositional variations in the fumaroles were identified during the unrest, accordingly with previous studies. Simultaneously, 3He/4He-ratios up to 4.0Ra were also measured, demonstrating that the unrest was due to the intrusion into the shallow plumbing system of a more-primitive 3He-rich magma, which is even volatile richer and less contaminated than mafic magma erupted as enclaves. This new intrusion did not however trigger an eruption.Published798–8141V. Storia e struttura dei sistemi vulcanici2V. Dinamiche di unrest e scenari pre-eruttiviJCR Journalrestricte