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Der Kartograph und Mathematiker Carsten Niebuhr beteiligte sich Mitte des 18. Jahrhunderts an einer beschwerlichen Expedition in den arabischen und vorderasiatischen Raum. Seine Erkenntnisse und Erfahrungen verewigte er anschließend in seinem Buch »Die Arabische Reise«. Studierende eines Seminars der Vorderasiatischen Archäologie haben nun in einer Ausstellung, die ab Ende Oktober im Dithmarscher Dom gezeigt wird, Niebuhrs erstaunlich genaue und differenzierte Beobachtungen nachgezeichnet und mit dem heutigen Forschungsstand verglichen.
Der Kopf als Schicksal
(1924)
Selena Axelrod Winsnes has been engaged, since 1982, in the translation into English, and editing of Danish language sources to West African history, sources published from 1697 to 1822, the period during which Denmark-Norway was an actor in the Transatlantic Slave Trade. Five major books have been published. They describe all aspects of life on the Gold Coast [Ghana], the Middle Passage and the Danish Caribbean islands [US Virgin Islands], as seen by five different men. Each had his own agenda and mind-set, and the books, both singly and combined, hold a wealth of information - of interest both to scholars and lay readers. They provide important insights into the cultural baggage the enslaved Africans carried with them to the America's. One of the books, L.F. Rømer's 'A Reliable Account of the Coast of Guinea' was runner-up for the prestigious International Texts Prize awarded by the U.S. African Studies Association.
Selena Axelrod Winsnes has been engaged, since 1982, in the translation into English, and editing of Danish language sources to West African history, sources published from 1697 to 1822, the period during which Denmark-Norway was an actor in the Transatlantic Slave Trade. Five major books have been published. They describe all aspects of life on the Gold Coast [Ghana], the Middle Passage and the Danish Caribbean islands [US Virgin Islands], as seen by five different men. Each had his own agenda and mind-set, and the books, both singly and combined, hold a wealth of information - of interest both to scholars and lay readers. They provide important insights into the cultural baggage the enslaved Africans carried with them to the America's. One of the books, L.F. Rømer's 'A Reliable Account of the Coast of Guinea' was runner-up for the prestigious International Texts Prize awarded by the U.S. African Studies Association.
This monograph focuses on Gnokholo, a precolonial province of Senegal that has long been landlocked because of its eastern position and inhabited by Mandingoans. The decline of the Malian empire in the 15th century has been confined to a situation of geographical marginality in the foothills of the mountains Of the Fouta Djalon. This book reconstructs the geography, history, economy, culture and social structures of the pre-colonial Gnokholo Kingdom. It fills a deficit insofar as social studies have neglected these populations considered as part of a minority culture. Written in a simple and clear style, this book is in keeping with the tradition of the work of Father Boilat. It is an anthropological collection of a body of knowledge revealing various aspects of the country and the inhabitants of the Gnokholo.
As one of the foremost scientists of the time, the Zurich-born botanist Hans Schinz travelled throughout the colony of German South-West Africa, now known as Namibia, from 1884 to 1886. During his expeditions, which covered the length and breadth of the country, he was an enthusiastic collector of many botanical, ethnographical, zoological and mineral samples. He described his experiences in vivid detail in letters to his family and colleagues in Zurich and Berlin. The extensive collections, with which he returned to Switzerland, and his subsequent research fostered his rapid career progression: in 1893 Hans Schinz became the director of the Zurich Botanical Gardens and in 1895 the Professor of Systematic Botany at the University of Zurich.
This newly edited volume, Bali Nyonga Today covers about thirty years of (1985-2015) developments in Bali Nyonga, Cameroon. Already well-established as a city-state prior to German colonization in the 19th century, Bali Nyonga continues to adapt to national and global changes since its incorporation into the modern state of Cameroon. With fresh contributions from 12 leading scholars, this volume covers a wide variety of themes and issues including; geographical and historical updates on Chamba migration and settlement in its present homeland in Northwestern Cameroon, an in-depth description of Bali Nyonga cultural associations within the country and the Bali diaspora in the United States, the coexistence of traditional and modern religious worldviews, traditional medicinal practices and life-cycle rituals of significance. Of noteworthy are two chapters devoted to Mungaka, the language of the Balis and its revival in the context of new language policies and developments in African linguistic. Spiced with numerous photos, many of which have never been published, the book is a welcome addition to studies in contemporary African history, culture and society.
The analysis of the global stratospheric meridional circulation, known as the Brewer-Dobson circulation, is an essential part of both experimental and theoretical atmospheric sciences. This large-scale circulation has a crucial influence on the global burden of greenhouse gases and ozone depleting substances throughout the complete atmosphere. This makes it an important factor for the Earth’s radiative budget, which is perceptible at the Earth’s surface despite the remote location of the stratosphere. In the course of climate change it is generally expected that also the Brewer-Dobson circulation undergoes significant changes in structure and strength, although the exact repercussions are still uncertain and thus remain an open scientific question. A general problem for the observational investigation of the dynamical processes in the stratosphere is that residual mean transport cannot be measured directly and hence requires the use of sophisticated proxies. Many studies in the past consider the so-called mean age of air, which is a measure of the average time an air parcel has spent in the stratosphere since passing a certain reference point. While changes in the strength and structure can be detected and visualized using mean age of air, a more thorough distinction between the different involved transport mechanisms of the circulation (residual circulation, mixing) cannot be made. For that, consideration of a full distribution of all relevant transit times through the stratosphere, an age spectrum, is favorable and a powerful tool to analyze the spatial structure as well as possible future changes in detail. Mean age of air and age spectra can be readily derived in atmospheric modeling studies, but an observationally based retrieval is challenging. Mean age of air is usually approximated from measurements of very long-lived trace gas species that act as a dynamical tracer for the stratosphere. The retrieval of age spectra from observations, however, remains an open task for which different methods have been proposed in the past, that often require a combination of strong assumptions and model data explicitly. This is a major issue for a precise and independent investigation of stratospheric dynamics based on measurements. The focus of this cumulative dissertation is on the development process and application of an inversion method to derive stratospheric age spectra from mixing ratios of chemically active substances that combines an applicable and precise ansatz with a minimized amount of necessary model data. Chemically active species have the important benefit that chemistry and transport in the stratosphere are strongly correlated so that the state of depletion of a trace gas can give some information on certain parts of the age spectrum. Considering a sufficient number of distinct trace gases simultaneously, a full approximation of the age spectrum should be possible. The main section of this thesis is split into three parts, which follow the main aspects and key results of the three publications involved (Hauck et al., 2019, 2020; Keber et al., 2020). The newly developed inverse method is based upon the previously established ansatz by Schoeberl et al. (2005), but constrains the shape of the age spectrum by a single parameter inverse Gaussian function. This keeps the balance between applicability and accuracy with a limited amount of measurement data. Additionally, the method introduces a seasonal scaling factor that imposes higher order maxima and minima onto the intrinsically monomodal spectrum based on the seasonal cycle of the tropical upward mass flux to incorporate phases of weaker and stronger transport. A proof of concept of the inverse method is provided using an idealized simulation of the ECHAM/MESSy Atmospheric Chemistry (EMAC) model, where the method is applied to a set of artificial radioactive trace gases with known chemical lifetime. The results imply that the method works properly and retrieves age spectra that match the EMAC reference spectra significantly well on the global and seasonal scale. Only in the lower stratosphere, the performance of the inverse method on the seasonal scale decreases as entrainment into the stratosphere is considered only across the tropical tropopause. Transport across the local extratropical tropopause, however, is a key feature for trace gases in the extratropical lowermost stratosphere so that this entrainment must be included explicitly.
In the second part, the discovered problems are approached to make the inverse method applicable to observations. The formulation of the method is extended to incorporate transport explicitly across the tropical (30° S – 30° N), northern extratropical (30° N – 90° N), and southern extratropical tropopause (30° S – 90° S) each with a single age spectrum that can be inverted independently.
...
IFLS-Journal. 26_21
(2021)
This article is written from the perspective of phenomenology. Its potential gain for a critical human geography is discussed in contrast to the paradigmatic frame of basic assumptions in constructivism. The example of atmospheres will illustrate another theoretical conception of space. In phenomenological view there happens not only a reality of things but also a circum-actuality is not spatially extended like a house or another material objective. Atmospheres are vital qualities (Dürckheim) we feel like a cloud in our sense perception in situations of awareness. This implies the necessity to make a difference between a material body (Körper) and a felt body (Leib). This epistemic knowledge will improve our critique of neoliberal societies, tuned by aestheticisation especially in glamour CBDs of postmodern cities. Finally there is a close link to the work of Michel Foucault, topped off in his The Hermeneutics of the Subject. References to the Critical Theory (Frankfurter Schule) are connected.
Historic amphibian settlements in the northwestern Nile delta - a geoarchaeological perspective
(2020)
No concise picture of the archaeological and palaeoecological evolution can be drawn for the northwestern Nile delta, and archaeological records show significant population dynamics that still need explanation and spur the need for further palaeoenvironmental research. This study delivers a set of new methods especially in the fields of remote sensing and data analytics that can be regarded as important milestones and foundations for further palaeoenvironmental research in the area. Additionally, it shows new insights for individual time slices.
This geoarchaeological project is a cooperation with the archaeological excavations of the German Archaeological Institute (DAI) in Buto and Kom el’Gir. It expands the work of Wunderlich (1989) which laid important foundations in understanding the origin of the initial landscape that was later colonized in different cultural stages showing different dynamics, settlement intensities and even long phases of abandonment or breaks in between. This forms the starting point for relating the population dynamics of the different cultural phases reaching from Predynastic (prior to 3150 before Christ) up to the Greco-Roman era (~anno Domini 650) to the environmental history and events that occurred in the area. It is very likely that environmental changes such as the shifting of major water routes, inundation or paludification of larger areas or other environmental events affected settlements and human life in the area.
In the fields of remote sensing new methods are presented to complete information on the location of ancient settlements, and complex workflows are developed that allow the tracing of subsurface structures via indirect analysis of vegetation growth in larger time series data. It was verified that a relationship exists between vegetation performance, the appearance of archaeologic material in the topsoil, and the location of former Nile river branches.
Together with a new high resolution digital elevation model (DEM) based on TanDEM-X data, new interpretations with a high spatial significance are possible. For individual time slices, namely the Late Dynastic and Greco-Roman era, this work delivers a detailed landscape description suggesting a finely ramified subdelta, with all settlements placed on alluvial levees. This explains the massive increase in settlements in the Ptolemaic, Roman and in particular late Roman periods (4th century before Christ – anno Domini 7th century).
We sampled the Nile delta clays together with the channels and the material of the archaeologic excavations in vibracores and profile walls. This geologic inspection of the subsurface together with geochemical results from a handheld portable X-ray fluorescence device (pXRF) allowed new interpretations of the landscape and environmental history. For example, we used geochemical data to distinguish between artificial and natural channels as a measure for the anthropogenic influence, a proxy for past environmental characteristics and lastly as a basis for a new dating method. Many of the channels, for instance, were dated by our own 14C datings, comparisons with the previous work ofWunderlich (1989) and application of new dating approach based on machine learning with artificial neural networks. Additionally, we run a full methodological approach, and examine the applicability of pXRF methods in general, and test the quality of the data to detect distinct geochemical differences between the main settlement phases with advanced methods in data analytics. The dating is based, for example, on the training of artificial neural networks with pXRF data from archaeological material of well-dated context to date test data of cultural layers within the vibracores. With this method the homogeneous Nile alluvium, cultural layers and channels can be dated roughly and, as a result, fundamental changes in the landscape can be linked with the settlement history of Buto and neighboring tells.
IFLS-Journal. Nr. 25, 2020
(2020)
There seems to be a wide agreement in critical geographic thought that Hegel is dead, as to end up with Hegel’s idealism serves to be the starting point for the materialist project of critical geographies. This paper aims to call this starting point into question by confronting Henri Lefebvre with Slavoj Žižek. While Lefebvre, one of the pioneers of materialist geographic thought, intensively worked on a metaphilosophical critique to open Hegel’s testament, Žižek’s Hegel supposed to pave the way for a new philosophical materialism. This paper seeks to claim that such a materialist Hegel not only survives the critical encounter of Lefebvre’s metaphilosophy, but also encourages us to inquire about the possibilities and consequences of a geographical turn to Hegel. What if there is a Hegel out there that geography has not even detected?
Wissenschaftliche Literatur über Serbien zählt im Westen zur Mangelware. Auf dem Büchermarkt überwogen bis vor kurzem geschichtliche Abrisse von Journalisten und dilettierenden Historikern. Montenegro ist ein noch seltenerer Gegenstand wissenschaftlicher Geschichtsschreibung. Daher weckt ein Sammelband zur Gesellschafts-, Kultur-, Politik- und Staatsgeschichte, der von einem wissenschaftlichen Institut und ausgewiesenen Kennern der serbischen Geschichte herausgegeben wurde, hohe Erwartungen. ...
Nationalparke haben nicht nur den Zweck, Ökosysteme auf einer ausreichend großen Fläche sich selbst zu überlassen, damit sich ein ökologisches Gleichgewicht einstellen kann, sondern sie sind auch öffentlich zugänglich.
Umweltbildung in Nationalparken bezweckt, Kenntnisse über und Begeisterung für die Nationalparke zu vermitteln, so daß der Wert dieses Raumes erfaßt und Interesse an dessen Schutz geweckt wird. Ein Beitrag zur allgemeinen Umweltbildung wird geleistet, wenn der Besucher seine Erfahrungen im Nationalpark auf alle Lebensbereiche übertragen kann. Da nur die wenigsten Besucher personengebundene Umweltbildungsarbeit, die in Form von geführten Wanderungen in jedem deutschen Nationalpark angeboten wird, in Anspruch nehmen, ist eine geeignete Umweltbildung durch Öffentlichkeitsarbeit erforderlich.
Alle Nationalparke bieten Informationen über die naturräumlichen Gegebenheiten und über Beeinträchtigungen der Ökosysteme an. Umfang und Qualität der Ausstellungen, Printmedien, Informationstafeln in der Natur und audiovisueller Medien variieren beträchtlich. Informationsmedien sind nicht immer geeignet, auf das Erlebnis Natur vorzubereiten und umfassende Informationen zu vermitteln. In den meisten Informationshäusern wird "ein Stück Natur" in die Ausstellung geholt, die dort ausgiebig betrachtet oder angefaßt werden kann; Hören und Riechen spielen noch eine untergeordnete Rolle. Beeinträchtigungen der Ökosysteme (Müll, Giftstoffe, Tourismus) werden in allen Informationsmedien dargestellt, in den Ausstellungen z.T. sehr dramatisch. Es sollte keine "heile Welt" dargestellt werden; Ausstellungen sollten betroffen machen, gleichzeitig jedoch Begeisterung für die Natur wecken.
Lernen über die Natur in und mit der Natur stehen im Vordergrund der Bildungsarbeit und führten bereits zu Konzepten, diese Erfahrungen auch ohne Ranger-Begleitung sammeln zu können: Im Nationalpark Bayerischer Wald wurde 1995 ein Naturerlebnispfad fertiggestellt, der Vorgänge in Ökosystemen veranschaulicht (spielerisch) und Zusammenhänge bewußt macht (wissenschaftlich, ethisch), der als Konzept für zukünftige Umweltbildungsarbeit zu sehen ist. Geowissenschaftliche und kulturhistorische Themen sollten immer miteinbezogen werden, um den Nationalpark als Gesamtraum erfassen zu können.
Um möglichst viele Besucher zu erreichen, müssen alle erdenklichen Informationsmedien eingesetzt werden. Insgesamt ist dieses Angebot noch nicht groß genug; acht der zwölf deutschen Nationalparke wurden jedoch erst nach 1990 gegründet, sind also noch sehr jung.
Bildungsarbeit wird in deutschen Nationalparken überwiegend durch Umweltsponsoring ermöglicht und ebenfalls Wirtschaftsunternehmen rücken die Nationalparke durch Printmedien u.ä. ins öffentliche Bewußtsein. Weder eines der Bundesministerien noch ein übergeordneter Fremdenverkehrsverband informiert zu allen deutschen Nationalparken. Verkehrsverbände der Nationalpark-Gemeinden erwähnen Nationalparke als Möglichkeiten zur Erholung allenfalls als "Touristische Attraktion" oder "Weitere Angebote".
Deutsche Nationalparke werden auf der gleichen gesetzlichen Grundlage wie Naturschutzgebiete geschützt. Naturschutz ist Ländersache, die Länder übertragen die Zuständigkeit z.T. an die Nationalparkverwaltungen. Die zwölf deutschen Schutzgebiete von nationaler Bedeutung in acht verschiedenen Bundesländern weichen in ihrem Schutzzweck und in ihrer Öffentlichkeitsarbeit voneinander ab. Besonders ungünstig wirkt sich dies bei der Besucherlenkung aus, zumal eine zu geringe Anzahl Mitarbeiter in den fremdenverkehrsbelasteten Nationalparken zur Verfügung steht.
Die ersten Schritte zur einheitlichen Darstellung und einheitlichen Besucherlenkung wurden von der FÖNAD unternommen. Sie gab die Entwicklung eines Besucherleit- und Informationssystems, eines Nationalpark-Logos und ein Konzept für einheitlich gestaltete Faltblätter (Corporate Design) in Auftrag; die Ergebnisse der Aufträge sollen die deutschen Nationalparke als einheitlich zu schützende Gebiete darstellen und Besuchern die Orientierung und das umweltverträgliche Verhalten erleichtern. Das Besucherleitsystem ist bereits in vier Nationalparken installiert. Diese Konzepte sind jedoch nur Richtlinien, die für die Nationalparkverwaltungen nicht verbindlich sind.
Aus den Antworten auf einen Fragebogen über Interpretive Services in ausgewählten Ländern ließ sich ersehen, daß die Nationalparke in etwa der Hälfte der antwortenden Staaten (n=27) dezentral organisiert sind, sich aber doch jeweils eine übergeordnete Behörde um die Darstellung des nationalen Naturerbes bemüht. National Park Services sind in den meisten Fällen nur für das Corporate Design zuständig, d.h. sie geben Vorgaben an die Nationalparkverwaltungen, die Medien dann um die räumlich spezifischen Informationen ergänzen. Nur in den Vereinigten Staaten ist der National Park Service für sämtliche Informationsmedien der mehr als 350 Gebiete nationaler Bedeutung zuständig.
Band 2 enthält eine Nationalpark-Bibliographie mit 2224 Literaturstellen (Stand: 4.11.1995).
Frankfurt am Main
(1885)
Understanding the role of structure and social aspects regarding heat stress of people in urban areas requires an interdisciplinary scientific approach that connects methods from both natural sciences and social sciences. In this study, we combine three approaches to provide an interdisciplinary analysis of the structure and social components of heat stress in the city of Aachen, Germany. First, we assess the overall spatial structure of the urban heat island using spatially distributed measurements from mobile air temperature recordings on public transport units combined with spatially distributed geo-statistical data. The results indicate that the time of day matters: During the afternoon, areas with a relative low building density, like the industrial area northeast of the inner city, are the warmest, while surfaces in high-building-density areas like the inner city heat up faster during the evening. Second, we combine these measurements with place-based survey data collected in 2010 from residents aged 50 to 92 regarding their individual housing conditions, medical history and social integration to examine the match among heat-based stress of older residents, social conditions and elevated temperatures in their residential quarter. We identify disadvantaged areas for specific already-disadvantaged demographic groups in the city, pointing to a cumulation of inequalities, including heat stress among the most vulnerable. Third, we compare data of biometeorological measurements on urban public squares during the afternoon with results of the micrometeorological model ENVI-met to examine the spatial variability of the inner-city heat load. We complement the modelling results with on-site interviews to evaluate people’s heat perception at the same public places. A simulation shows that additional vegetation would increase thermal comfort at these public places, whereby the heat load assessed using the predicted mean vote (PMV) value would decrease by approximately 60 %. Furthermore, we demonstrate the strengths and weaknesses of heat stress simulation. ENVI-met allows for an overall reasonable representation of heat load during stable atmospheric conditions. However, due to the setup and structure of ENVI-met, large-scale atmospheric changes that occur during the day cannot readily be integrated into ENVI-met simulations.
Case numbers of endemic Ca-deficiency rickets (CDR) have been reported to be alarmingly rising among children of subsistence farms in developing countries within the last 30 years. Fluoride toxicities in the environment are known to not be related to the disease. To investigate if, instead, CDR is caused by a nutrient deficiency in the environment, subsistence farms in an endemic CDR area near Kaduna, northern Nigeria, were investigated for bedrock, slope forms, soil types, and soil characteristics. The natural environment was investigated according to the World Reference Base, soil texture was analysed by pipette and sieving, and plant-available macronutrients were determined using barium-chloride or Ca-acetate-lactate extraction. The analyses showed that granite and slope deposits were the dominant parent materials. The typical slope forms and soil types were Lixisols and Acrisols on pediments, Fluvisols in river valleys, and Plinthosols and Acrisols on plains. Compared with West African background values, all of the soils had normal soil textures but were low in macronutrients. Comparisons to critical limits, however, showed that only the P concentrations were critically low, which are typical for savanna soils. A link between nutrient deficiency in soils and CDR in the Kaduna area was therefore considered unlikely.
IFLS-Journal. Nr. 24, 2019
(2019)
Das im zweijährigen Turnus stattfindende International Symposium on Place Names (ISPN) wurde unter Leitung von Prof. Herman Breyer ausgerichtet.
In zahlreichen Vorträgen wurde herausgearbeitet, welche hohe Bedeutung die Namengebung für Straßen, Schulen und andere öffentliche Einrichtungen für die Identitätsstiftung besitzen kann. Ein weiterer Aspekt, der in vielfältiger Weise diskutiert wurde, ist die Relevanz von Toponymen als Teil des historischen Erbes.
Este artigo explora a produção e transmissão de ilustrações que Candido Portinari fez para uma edição norte-americana do livro de Hans Staden sobre o Brasil no século XVI. Realizados em 1941, os desenhos caíram em esquecimento por quase sessenta anos até a sua publicação póstuma em 1998 no Brasil. Este artigo argumenta que o destino dos desenhos é sintomático da articulação da memória cultural social do passado colonial brasileiro. Com base na análise da recepção crítica e do repertório visual dos desenhos, sugere que as ilustrações de Portinari divergem de representações tradicionais da morte dos povos indígenas por desafiarem a temporalidade subjacente às molduras nacionais da memória colonial.
IFLS-Journal. Nr. 23, 2018
(2018)
Was ist ein geographisches Bild? Darauf hat sicher jeder eine Antwort: Beim einen poppen im Kopf zunächst die Urlaubsfotos von der finnischen Schären-Küste oder aus Paris auf, die andere denkt an Satellitenaufnahmen des schwindenden Eisrandes der Arktis im GEO-Magazin oder an Claudia Kleinerts Wetterkarte in den Tagesthemen. Auf den ersten Blick scheint klar: alles Bilder, alles irgendwie geographisch.
IFLS-Journal. Nr. 22, 2017
(2017)
IFLS-Journal. Nr. 21, 2016
(2016)
Menschliche Körper und Räume sind wechselseitig aufeinander bezogen und sehr ähnlichen gesellschaftlichen Konstitutionsbedingungen unterworfen. Dessen ungeachtet wurde der Körper mit seinen Bedeutungen für die Konstruktion und Aneignung von Räumen in der Geographie bisher kaum thematisiert. Dieser Beitrag widmet sich aus feministisch-poststrukturalistischer Perspektive dem dynamischen Wechselverhältnis von Körpern und Räumen. Besonders hervorgehoben werden dabei die Bedeutungen von Fremd- und Eigenwahrnehmung für vielfältige Raumaneignungsstrategien. Damit wird zugleich ein theoretischer Ansatz zur Diskussion gestellt, der neue Betrachtungs- und Analyseebenen eröffnet.
Drawing on the example of a research project on the extension of the margins of the global agricultural market through the workings of agribusiness in Ghana, this paper explores what contribution ethnographic approaches can make to the study of quotidian market constructions in organizational settings. It demonstrates how ethnographies of marketization can be grasped conceptually, epistemologically and methodologically, as well as what practical and methodological challenges such a practice-oriented approach towards the everyday organization of markets might encounter. By doing so, the paper offers a methodological contribution to the interdisciplinary field of marketization studies. Moreover, this paper urges economic geographers to further harness the epistemological potential of ethnographic approaches.