scholarly journals La Ruta Lyell: una proposta geoturística per a la divulgació i la didàctica del patrimoni geològic de Catalunya

Author(s):  
I. Camps Gamundi

In the summer of 1830 Charles Lyell carried out an expedition through Catalonia with the aim of learning about Olot volcanism. The most important route starts in Barcelona and reaches Ceret (Vallespir, Northern Catalonia), passing through high-value of geological and landscape such as Montjuïc, Montserrat, Súria, Cardona, the Lluçanès, the Vic plain, the Cabrerès, the Garrotxa volcanic area and the Salines massif. The implementation of a long-distance route similar to other thematic paths and focused on the teaching of geology and the interpretation of the landscape while following in the footsteps of this expedition (Lyell Route) can generate an original product in the line of sustainable tourism. This itinerary would bring socio-economic and scientific-cultural benefits to the territories through which it passes and to society as a whole. Finally, it is clear that to carry out this project optimally requires solid and assertive collaboration between different geological and environmental actors, especially those who develop their activity on the territory of the Lyell Route.

2021 ◽  
Vol 13 (4) ◽  
pp. 763
Author(s):  
Xuelei Li ◽  
Zhuo Jia ◽  
Nanqiao Du ◽  
Yi Xu ◽  
Gongbo Zhang

Remote sensing is a non-contact, long-distance detection technology. The reflection characteristics of a seismic wave can be used to detect remote and non-contact targets. Based on the reflection characteristics of a seismic wave, the underground structure in Tengchong Volcanic Area is explored. In order to further study the deep structure and magmatic activity of the crust in the volcanic area, we carried out a one-year mobile seismic observation. In this paper, nine broadband seismic stations were set up in the Tengchong Volcanic Area, and 3350 receiver function waveforms were collected. The crustal thickness, average wave velocity ratio, and Poisson’s ratio below these stations were calculated by the receiver function method, and the velocity structure near the Moho below these stations was evaluated. Combined with topographic data from SRTM3 (Shuttle Radar Topography Mission 3), this study reveals the dynamic relationship among crustal structure, crustal magmatism, and regional tectonic movement. Mantle upwelling plays an important role on the Moho uplift in the northern Tengchong Volcanic Area, and there are interconnected intracrustal magma chambers in the upper platform. The evaluation results of the Moho transition zone also indicate that the Dayingjiang fault is closely related to the tectonic activity of the Tengchong Volcanic fault.


2021 ◽  
Author(s):  
Paul Pfaffenbichler ◽  
Joachim Gauster ◽  
Lukas Hartwig ◽  
Michael Meschik

Before the Covid-19 pandemic air travel was growing steeply and “flight shame” became one of the catch phrases of the climate crisis. Too often urban citizens undermined eco-friendly workday mobility with long-distance holiday air travel. The arrival of the Covid-19 pandemic posed new challenges. The recreational needs had to be satisfied by domestic tourism closer to home. There is a need for innovative sustainable tourism products and concepts to respond to both of these trends. Bicycle tourism combined with public transport for destination access and egress is a promising candidate for low carbon and regional tourism concepts. The Danube region is among the most important European cycle tourism destinations. A long stretch of the EuroVelo route 6 follows the river Danube, other EuroVelo routes cross the region. The European Interreg-project EcoVeloTour combines three main elements to support new sustainable tourism concepts in this corridor: ecotourism, use of public transport to access the destination or starting and final points of cycle tours and cycling within the destination region. Key elements of the EcoVeloTour approach are sustainable mobility and ecotourism guidelines. The guidelines utilize synergies between sustainable multimodal mobility planning, including cycling infrastructure, and cyclist ecotourism related services and ecotourism development (e.g. destination management, marketing, product development) along the EuroVelo routes. The guidelines for sustainable bicycle tourism provide a comprehensive basis for planning and improving all relevant mobility-related infrastructure and services. The chapter “Infrastructure for high-level bicycle tourism” deals with relevant road infrastructure elements like different types of tracks, intersections and roundabouts, route signposting, bicycle parking, shelters for cyclists, lighting and maintenance. The chapter “Transport services and intermodality” addresses public transport use for transfers to origin and from final destination of bicycle tours. It describes infrastructure, information and services needed at intermodal nodes. Regional bicycle tourism strategies and pilot projects are elaborated based on the EcoVeloTour guidelines. An interactive self-assessment tool to support strategy development and pilot actions of the regions was developed and tested in transnational learning interactions.


Author(s):  
James Cronshaw

Long distance transport in plants takes place in phloem tissue which has characteristic cells, the sieve elements. At maturity these cells have sieve areas in their end walls with specialized perforations. They are associated with companion cells, parenchyma cells, and in some species, with transfer cells. The protoplast of the functioning sieve element contains a high concentration of sugar, and consequently a high hydrostatic pressure, which makes it extremely difficult to fix mature sieve elements for electron microscopical observation without the formation of surge artifacts. Despite many structural studies which have attempted to prevent surge artifacts, several features of mature sieve elements, such as the distribution of P-protein and the nature of the contents of the sieve area pores, remain controversial.


VASA ◽  
2012 ◽  
Vol 41 (4) ◽  
pp. 262-268 ◽  
Author(s):  
Schweizer ◽  
Hügli ◽  
Koella ◽  
Jeanneret

On the occasion of diagnosing a popliteal entrapment syndrome in a 59-year old man with no cardiovascular risk factors, who developed acute ischemic leg pain during long distance running, we give an overview on this entity with emphasis on patients’age. The different types of the popliteal artery compression syndrome are summarized. The diagnostic and therapeutic approaches are discussed. The most important clinical sign of a popliteal entrapment syndrome is the lack of atherosclerotic risk factors in patients with limited walking distance. Not only in young athletes but also in patients more than 50 years old the popliteal entrapment syndrome has to be taken into account.


2014 ◽  
Vol 4 (2) ◽  
pp. 106-112
Author(s):  
Anita Shrivastava ◽  
Andrea Burianova

This study aimed to explore the relationships between attachment styles, proximity, and relational satisfaction. This was achieved by assessing a distinct type of long distance romantic relationship of flying crews, compared with proximal (non-flying crew) romantic relationships. The responses of 139 expatriate professionals revealed significant associations between proximity and anxious and avoidant attachment dimensions. The role of the avoidant dimension in comparison with that of the anxious dimension was found to be a significant predictor of relational satisfaction. This study contributes significantly toward addressing the role of proximity and attachment in relational satisfaction in a new context of geographic separation.


Nature ◽  
2001 ◽  
Author(s):  
Helen Pearson
Keyword(s):  

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