Jornal da UNESP, 2015, ano XXXI, n. 312

Jornal elaborado pela Assessoria de Comunicação e Imprensa da Reitoria da UNESP

Randbemerkungen "zu dem Raschi-Commentar" : (vgl. Augustheft S. 312 fg.)

Klein

Na 50 Nachlass Arthur Schopenhauer - 'Schopenhauer-Archiv', 445 - Belege zur Erblichkeit intellektueller Anlagen der Mutter

2 Seiten

Na 50 Nachlass Arthur Schopenhauer - 'Schopenhauer-Archiv', 312 - Zusendung an Professor Hugo von Meltzl einer Abhandlung zu den Schopenhauer-Portraits

u.a.: Wilhelm Gwinner; Arthur Schopenhauer;

Ms.Ff.F.Stoltze 3. 312 - Brief von Jakob Stern an Friedrich Stoltze

Übersendung eines Gedichts (von Abelein) für die Frankfurter Latern, Übersendung einer eigenen Schrift unter dem Pseudonym "Dr.W.Rubens"

Ms.Ff.F.Stoltze 3. 445 - Brief von Friedrich Stoltze an Hermann Stoltze

Nachrichten aus Frankfurt, Stoltze: Veröffentlichungen, Radfahrer-Versammlung, Königstein: Kur, Georg Pingler, Stoltzeplätzi

Particulate and phytoplankton absorption during POLARSTERN cruises ANT-XXVI/3 and ANT-XXVIII/3

The euphotic depth (Zeu) is a key parameter in modelling primary production (PP) using satellite ocean colour. However, evaluations of satellite Zeu products are scarce. The objective of this paper is to investigate existing approaches and sensors to estimate Zeu from satellite and to evaluate how different Zeu products might affect the estimation of PP in the Southern Ocean (SO). Euphotic depth was derived from MODIS and SeaWiFS products of (i) surface chlorophyll-a (Zeu-Chla) and (ii) inherent optical properties (Zeu-IOP). They were compared with in situ measurements of Zeu from different regions of the SO. Both approaches and sensors are robust to retrieve Zeu, although the best results were obtained using the IOP approach and SeaWiFS data, with an average percentage of error (E) of 25.43% and mean absolute error (MAE) of 0.10 m (log scale). Nevertheless, differences in the spatial distribution of Zeu-Chla and Zeu-IOP for both sensors were found as large as 30% over specific regions. These differences were also observed in PP. On average, PP based on Zeu-Chla was 8% higher than PP based on Zeu-IOP, but it was up to 30% higher south of 60°S. Satellite phytoplankton absorption coefficients (aph) derived by the Quasi-Analytical Algorithm at different wavelengths were also validated and the results showed that MODIS aph are generally more robust than SeaWiFS. Thus, MODIS aph should be preferred in PP models based on aph in the SO. Further, we reinforce the importance of investigating the spatial differences between satellite products, which might not be detected by the validation with in situ measurements due to the insufficient amount and uneven distribution of the data.

Petrology and diagenesis of sandstones at DSDP Hole 58-445

The sandstone succession in the lower 240 meters of DSDP Site 445, on the Daito Ridge, provided an opportunity to evaluate the effect of burial diagenesis of sandstones in a deep hole in a tectonic environment (remnant arc) characterized by a history of high heat flow. This report provides preliminary data concerning the petrology and diagenesis of these sandstones and records diagenetic changes which have occurred with increasing depth of burial. Methods used for this study included grain-size analysis (measured from thin sections using the method of Friedman, 1958), polarizing microscopy, X-ray diffraction, and scanning electron microscopy. A JEOL scanning electron microscope fitted with an energydispersive- X-ray detector was used for obtaining qualitative chemical data on certain minerals to aid in identification.