Histoire malacologique du Lac Balaton en Hongrie / par Georges Servain.

Abstract

Alluvions du lac. Zonites OItUianus. Zonites OItisianus, Fagot, mss. 1881. Nos échantillons recueillis sur les bords du Bàlaton dans les détritus rejetés par les eaux, sont identiques ;\ ceux du Mas d'Agenais (Lot-et-Garonne) que le Malacologiste Paul Fagot a envoyé, comme types, à notre ami J. R. Bourguignat, Cette espèce, dont M. P. Fagot se réserve la description, est des plus caractérisées. Elle appartient au groupe du zonite précédent. Zonites Udvaricus. Testa aperle umbilicata (umbilicus profundus ac pervius), supra fere planata, fragili, cornea, nitida, subtilissime striatula, proesertim adsuturam;spira valde depressa, vix subconvexa ; apice relative magno, loevigato;anfr.Ktibus 3 1/2 vix convcxiusculis, rapide

A self‐sustaining climate mode in the tropical atlantic, 1995–97: Observations and modelling

“…Noting that Hirst's mode does not constrain the direction of initial horizontal disturbance, this event is still consistent with our EAO hypothesis. However, it seems that the westward propagation is not in the zonal wind field (Servain 1984), in contrast to the coupled mode seen in the 1996-97 event. The difference between these two cases could be attributed to the extent of ocean-toatmosphere feedback.…”

“…This repeat of the EAO is the behaviour expected of the coupled modes of Hirst (1988) and Zebiak (1993) in the absence of external forcing; it is noteworthy that these two periods were free of significant El Niiios in the Pacific. Of these, the 1967-68 event was studied in terms of SST anomalies in the Gulf of Guinea associated with changes in zonal-wind anomalies (Picaut et al 1984;Servain 1984). This event started with a cold phase, which was inferred as being triggered by an easterly anomaly in the western equatorial Atlantic.…”

“…The Atlantic ocean and atmosphere then displayed very similar characteristics to those typically seen in the Pacific during El Niiio, namely, weakening equatorial easterlies coupled with rising sea surface temperatures, moving eastwards. Other such warm events were observed in the tropical Atlantic (Servain 1984;Lamb et al 1986;Arnault and Cheney 1994;Carton and Huang 1994), typically lagging El Niiio events by four to five months (Enfield and Mayer 1997). However, there are not always clear links to the Pacific climate.…”

“…The basin was, however, unable to sustain these oscillations beyond a decade or two. Successive warm and cold events have been seen in the observational record (Servain et al 1982;Lamb et al 1986;Servain 1991), although this has not always been noted as a distinct feature of the climatic variability. The potential for the Atlantic basin to exhibit a coupled ocean-atmosphere climate oscillation completely independent of the Pacific may thus exist but has not been fully explored.…”

A nomenclator of extant and fossil taxa of the Valvatidae (Gastropoda, Ectobranchia)

“…Remarks: (1) It is unclear, whether Valvata balatonica in Servain (1881 : 94–95) refers to the same species: Type localities of both authors are very close, but Servain (1881) did not mention Rolle’s description and provided a full diagnosis.…”