Media attention for climate change around the world: A comparative analysis of newspaper coverage in 27 countries     

Andreas Schmidt  Ana Ivanova  Mike S. Schäfer 《Global Environmental Change》2013,23(5):1233-1248

Climate change is a global phenomenon, and its outcomes affect societies around the world. So far, however, studies on media representations of climate change have mostly concentrated on Western societies. This paper goes beyond this limited geographical scope by presenting a comparative analysis of issue attention in 27 countries. The sample includes, among others, countries that have committed themselves to greenhouse gas emission reductions under the Kyoto Protocol such as Germany as well as countries that are strongly affected by the consequences of climate change like India. In a first step, it describes the development of media attention for climate change in these countries from 1996 to 2010. Second, it compares the amount of media attention and explores whether it corresponds with indicators measuring the relevance of climate change and climate policies for a country. The analyses show that climate change coverage has increased in all countries. Still, overall media attention levels, as well as the extent of growth over time, differ strongly between countries. Media attention is especially high in carbon dependent countries with commitments under the Kyoto Protocol.  相似文献   

The geodynamic and limnological evolution of Balkan Lake Ohrid,possibly the oldest extant lake in Europe     

Bernd Wagner  Paul Tauber  Alexander Francke  Niklas Leicher  Steven A. Binnie  Aleksandra Cvetkoska  Elena Jovanovska  Janna Just  Jack H. Lacey  Zlatko Levkov  Katja Lindhorst  Katerina Kouli  Sebastian Krastel  Konstantinos Panagiotopoulos  Arne Ulfers  Dušica Zaova  Timme H. Donders  Andon Grazhdani  Andreas Koutsodendris  Melanie J. Leng  Laura Sadori  Mirko Scheinert  Hendrik Vogel  Thomas Wonik  Giovanni Zanchetta  Thomas Wilke 《Boreas: An International Journal of Quaternary Research》2023,52(1):1-26

Studies of the upper 447 m of the DEEP site sediment succession from central Lake Ohrid, Balkan Peninsula, North Macedonia and Albania provided important insights into the regional climate history and evolutionary dynamics since permanent lacustrine conditions established at 1.36 million years ago (Ma). This paper focuses on the entire 584-m-long DEEP sediment succession and a comparison to a 197-m-long sediment succession from the Pestani site ~5 km to the east in the lake, where drilling ended close to the bedrock, to unravel the earliest history of Lake Ohrid and its basin development. ²⁶Al/¹⁰Be dating of clasts from the base of the DEEP sediment succession implies that the sedimentation in the modern basin started at c. 2 Ma. Geophysical, sedimentological and micropalaeontological data allow for chronological information to be transposed from the DEEP to the Pestani succession. Fluvial conditions, slack water conditions, peat formation and/or complete desiccation prevailed at the DEEP and Pestani sites until 1.36 and 1.21 Ma, respectively, before a larger lake extended over both sites. Activation of karst aquifers to the east probably by tectonic activity and a potential existence of neighbouring Lake Prespa supported filling of Lake Ohrid. The lake deepened gradually, with a relatively constant vertical displacement rate of ~0.2 mm a⁻¹ between the central and the eastern lateral basin and with greater water depth presumably during interglacial periods. Although the dynamic environment characterized by local processes and the fragmentary chronology of the basal sediment successions from both sites hamper palaeoclimatic significance prior to the existence of a larger lake, the new data provide an unprecedented and detailed picture of the geodynamic evolution of the basin and lake that is Europe’s presumed oldest extant freshwater lake.  相似文献   

The Revised Brussels–Locarno Sunspot Number (1981 – 2015)     

Frédéric Clette  Laure Lefèvre  Marco Cagnotti  Sergio Cortesi  Andreas Bulling 《Solar physics》2016,291(9-10):2733-2761

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The Revised Sunspot Record in Comparison to Cosmogenic Radionuclide-Based Solar Activity Reconstructions     

Raimund Muscheler  Florian Adolphi  Konstantin Herbst  Andreas Nilsson 《Solar physics》2016,291(9-10):3025-3043

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Chemistry and oxygen isotopic composition of cluster chondrite clasts and their components in LL3 chondrites          下载免费PDF全文

Knut Metzler  Andreas Pack 《Meteoritics & planetary science》2016,51(2):276-302

Cluster chondrites are characterized by close‐fit textures of deformed and indented chondrules, taken as evidence for hot chondrule accretion (Metzler 2012 ). We investigated seven cluster chondrite clasts from six brecciated LL3 chondrites and measured their bulk oxygen isotopic and chemical composition, including REE, Zr, and Hf. The same parameters were measured in situ on 93 chondrules and 4 interchondrule matrix areas. The CI‐normalized REE patterns of the clasts are flat, showing LL‐chondritic concentrations. The mean chemical compositions of chondrules in clasts and other LL chondrites are indistinguishable and we conclude that cluster chondrite chondrules are representative of the normal LL chondrule population. Type II chondrules are depleted in MgO, Al₂O₃ and refractory lithophiles (REE, Zr, Hf) by factors between 0.65 and 0.79 compared to type I chondrules. The chondrule REE patterns are basically flat with slight LREE < HREE fractionations. Many chondrules exhibit negative Eu anomalies while matrix shows a complementary pattern. Chondrules scatter along a correlation line with a slope of 0.63 in the oxygen 3‐isotope diagram, interpreted as the result of O‐isotope exchange between chondrule melts and ¹⁸O‐rich nebular components. In one clast, a distinct anticorrelation between chondrule size and δ¹⁸O is found, which may indicate a more intense oxygen isotope exchange by smaller chondrules. In some clasts the δ¹⁸O values of type I chondrules are correlated with concentrations of SiO₂ and MnO and anticorrelated with MgO, possibly due to the admixture of a SiO₂‐ and MnO‐rich component to chondrule melts during oxygen isotope exchange. Two chondrules with negative anomalies in Sm, Eu, and Yb were found and may relate their precursors to refractory material known from group III CAIs. Furthermore, three chondrules with strong LREE > HREE and Zr/Hf fractionations were detected, whose formation history remains to be explained.  相似文献   

High crustal diversity preserved in the lunar meteorite Mount DeWitt 12007 (Victoria Land,Antarctica)          下载免费PDF全文

Alberto Collareta  Massimo D'Orazio  Maurizio Gemelli  Andreas Pack  Luigi Folco 《Meteoritics & planetary science》2016,51(2):351-371

The meteorite Mount DeWitt (DEW) 12007 is a polymict regolith breccia mainly consisting of glassy impact‐melt breccia particles, gabbroic clasts, feldspathic clasts, impact and volcanic glass beads, basaltic clasts, and mingled breccia clasts embedded in a matrix dominated by fine‐grained crystals; vesicular glassy veins and rare agglutinates are also present. Main minerals are plagioclase (typically An_>85) and clinopyroxene (pigeonites and augites, sometimes interspersed). The presence of tranquillityite, coupled with the petrophysical data, the O‐isotope data (Δ¹⁷O = ?0.075), and the FeO_tot/MnO ratios in olivine (91), pyroxene (65), and bulk rock (77) indicate a lunar origin for DEW 12007. Impactites consist of Al‐rich impact‐melt splashes and plagioclase‐rich meta‐melt clasts. The volcanic products belong to the very low titanium (VLT) or low titanium (LT) suites; an unusual subophitic fragment could be cryptomare‐related. Gabbroic clasts could represent part of a shallow intrusion within a volcanic complex with prevailing VLT affinity. DEW 12007 has a mingled bulk composition with relatively high incompatible element abundances and shows a high crustal diversity comprising clasts from the Moon's major terranes and rare lithologies. First‐order petrographic and chemical features suggest that DEW 12007 could be launch‐paired with other meteorites including Y 793274/981031, QUE 94281, EET 87521/96008, and NWA 4884.  相似文献   

Special Issue on the JEM-EUSO Mission     

Andreas Haungs  Gustavo Medina-Tanco  Andrea Santangelo 《Experimental Astronomy》2015,39(1):1-10

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Ecosystem response to human- and climate-induced environmental stress on an anoxic coastal lagoon (Etoliko,Greece) since 1930 AD     

Andreas Koutsodendris  Achim Brauer  Ierotheos Zacharias  Victoria Putyrskaya  Eckehard Klemt  Francesca Sangiorgi  Jörg Pross 《Journal of Paleolimnology》2015,53(3):255-270

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Car navigation – computing routes that avoid complicated crossings     

Jukka M. Krisp  Andreas Keler 《International journal of geographical information science》2015,29(11):1988-2000

Personalized navigation and way-finding are prominent research areas of location-based service (LBSs). This includes innovative concepts for car navigation. Within this paper, we investigate the idea of providing drivers a routing suggestion which avoids ‘complicated crossings’ in urban areas. Inexperienced drivers include persons who have a driver’s license but, for whatever reason, feel uncomfortable to drive in a city environment. Situations where the inexperienced driver has to depend on a navigation device and reach a destination in an unfamiliar territory may be difficult. Preferences of inexperienced drivers are investigated. ‘Fears’ include driving into ‘complicated crossings’. Therefore, the definition and spatial characteristics of ‘complicated crossings’ are investigated. We use OpenStreetMap as a road dataset for the routing network. Based on the topological characteristics of the dataset, measured by the number of nodes, we identify crossings that are ‘complicated’. The user can choose to compute an alternative route that avoids these complicated crossings. This methodology is one step in building a full ‘inexperienced drivers’ routing system, which includes additional preferences from the user group, for example, as avoiding left turns where no traffic light is present.  相似文献   

Volcano-tectonic structures and CO2-degassing patterns in the Laacher See basin,Germany     

Andreas Goepel  Martin Lonschinski  Lothar Viereck  Georg Büchel  Nina Kukowski 《International Journal of Earth Sciences》2015,104(5):1483-1495

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