Exploring the vertical: science and sociality in the field among cavers in Venezuela

Recent scholarship on vertical geographies has lead to a critical reexamination of the relationship between space and power. In this paper, I develop a vertical geographies approach in an unexplored context and with a less tested method: that of cave explorers and scientists in the field in Venezuela, from an ethnographic perspective. Ethnographic analysis of exploration in practice, viewed in relation to a multi-dimensional environment and the social dynamics, bodies, and technologies involved in traversing it, illustrates the ways vertical geographies are constructed and experienced. For the Venezuelan Speleological Society, a group dedicated to cave exploration and science since 1967, examining these geographies highlights culturally specific ways the tension between sports and science in speleology play out and how new members are socialized in the field. Specifically, attention to verticality highlights the role that age, masculinist heroics, and other embodied dimensions play in the construction of speleological geographies. More broadly, an ethnographic focus on exploration, with humans probing the earth's sinuous contours, guards against thinking of verticality abstractly—doing so risks simplifying and even misrepresenting multi-dimensional and processual engagements among humans, their technologies, and the environment.     

Geodynamic processes in the NW Bohemian swarm earthquake region,Czech Republic,identified by continuous gas monitoring

The time series of two continuously operating gas monitoring stations at Oldřišská and Nový Kostel located along seismoactive faults in the epicentral area of the NW Bohemian swarm earthquakes (Czech Republic) are compared with water level fluctuations in two boreholes positioned along these faults and with gas flux variations of a mofette at the Soos mofette field at 9 km distance. The seasonal trend of the monitored CO₂ concentration with a maximum in November and a minimum in March/April is governed by groundwater temperatures, superimposed in spring by soil temperatures. CO₂ concentration variations identified at Oldřišská are also reflected in gas flux variations in the Soos mofette and/or water level fluctuations of two boreholes. Variations in the gas monitoring recordings of station at Nový Kostel are also linked with variations at Oldřišská. In all data sets, diurnal variations generated by earth tides occur, reflecting a daily stress – fault permeability cycle. Additional stress interferes with this cycle. Significant, abrupt changes are attributed to geodynamic processes linked with seismic events, as revealed by local seismicity or by the transient of waves of a strong remote earthquake. Simultaneous variations of the gas concentrations in the Nový Kostel area and in the gas flux in the Soos point to an interconnected hydraulic conductive fault systems present in the northern part of the Cheb Basin. Sharp falls in gas concentration, during or subsequent to, earthquake swarms may reflect fault compression associated with impeded gas migration. However, gas variations also occur in periods without seismic activity, indicating changes in fault permeability were caused by local aseismic fault movements, as revealed by events with opposite trends in the gas recordings at Oldřišská, Nový Kostel and the Soos. Therefore, a mathematical approach to establish a correlation between seismicity and gas geochemical variations is not possible.     

Reinventing the British film industry: the Group Production Plan and the National Lottery Franchise Scheme

This article is a comparative analysis of two analogous attempts to restructure the British film industry: the Group Production Plan of the early 1950s and the National Lottery Franchises of the late 1990s. The Group Production Plan brought together key industry figures such as Michael Balcon and John Grierson, who endured a fraught working relationship. The Plan failed, largely due to indifference from the major combines, Rank and the Associated British Picture Company (ABPC). Forty‐five years later, the Lottery Franchises were criticised for failing to produce enough films, although the example of Pathé Pictures suggests that expectations were too high and resources too low. The economic theory of path dependence problematises the policy drive to create vertically integrated companies. This article concludes that historical precedent plays an insufficient role in British film policy discourse and that academic research in cultural policy should aim to improve the dialogue between the past and the present.     

High‐Resolution 3D Marine Seismic Investigation of Hedeby Harbour,Germany

Offshore 3D‐seismic acquisition has been a standard for high‐precision structural imaging in the oil and gas industry for many years. Recently this technique has been adapted by only a few teams to the resolution required for archaeological marine investigation. In contrast to sonar techniques, the 3D‐seismic method produces images below the sea‐floor. We investigate the harbour of the Viking age proto‐town of Hedeby in Northern Germany with the SEAMAP‐3D system. SEAMAP‐3D allows for rapid acquisition and employs an automated data processing sequence. We observe a wealth of archaeologically relevant detail and compare our results with previous work.     

Significance of large-scale sand injectites as long-term fluid conduits: evidence from seismic data

Sand injectites and related features that are interpreted to have formed by large‐scale, often sudden, fluid escape in the shallow (typically <500 m) crust are readily imaged on modern seismic data. Many of the features have geometrical similarity to igneous dykes and sills and cross‐cut the depositional stratigraphy. Sand injectites may be multiphase and form connected, high‐permeability networks that transect kilometre‐scale intervals of otherwise fine‐grained, low‐permeability strata. North Sea examples often form significant hydrocarbon reservoirs and typically contain degraded, low‐gravity crude oil. Fluid inclusion and stable isotope data from cements in sand injectites record a mixing of aqueous fluids of deep and shallow origin.     

New Titanium Connectors for the Columns Capitals of the Classical Temple of Apollo Epikourios

The columns of monumental buildings in ancient Greece were provided with a pair of timber “empolia” (plugs) and a “pole” (pin), at interfaces between stone members (drums, capital). In order to reinstate this connection system, in columns capitals that were repaired, during the ongoing restoration of the classical temple of Apollo Epikourios (Greece), new poles and empolia made of titanium were installed. The titanium elements were designed to have similar shape and shear strength to the estimated respective characteristics of the ancient poles and empolia. Moreover, their effect on the seismic behaviour of the temple columns was numerically investigated. The investigation showed that, within the range of strong earthquakes which are anticipated in the area of the monument, the installation of a single pole at the interface between the capital and the uppermost drum leads to limited reduction of the expected maximum and residual deformations of the column, without altering significantly the main characteristics of its rocking response. Furthermore, poles located at every column interface ensures significant limitation of the column residual deformations. Prior to implementation of the titanium poles and empolia, the main aspects of their design were verified through specially designed experiments.     

Risk or chance: ‘the liberalization of foreign film imports’ and its impacts in Korea and Japan

This paper outlines the background of the abolition of restrictions on foreign film imports and the influence of this action in Korea and Japan. In order to develop this argument, the paper focuses on policy tendencies, the structure of the film industry, and the reactions of the film industry players in each country. In Korea, the decision provoked an outcry and street demonstrations from both civil society as well as the film industry players. By contrast, in Japan, not only was opposition to liberalization rarely expressed, but some people actually demanded liberalization. The author analyzes the reasons why the players in each country reacted in different ways to similar policy decisions, through two types of models, the ‘market-led model’ of Japan and the ‘government-led model’ of Korea.     

Seismic Vulnerability Assessment of the Urban Building Environment in Nablus,Palestine

ABSTRACT

This article describes a specifically developed framework to produce a seismic physical vulnerability model of residential buildings in Nablus (Palestine) within the European project SASPARM2.0. Based on the structural taxonomy of the territory, two different forms were defined to collect geometrical and structural data of buildings by different stakeholders (citizens and practitioners). This data was then employed to produce fragility curves using the mechanics-based procedure SP-BELA. To estimate seismic risk, the developed fragility model was combined with a hazard curve for the corresponding location. The described procedure is implemented in a WebGIS platform that allows to georeference and assess the surveyed buildings and define retrofitting strategies. Finally, the article carries out a comparison between the fragility curves of buildings in Nablus and the ones calculated for similar building typologies within a UNDP Jordan project aiming at the integrated risk assessment in Wadi Musa and surroundings.     

New Indices for the Existing City-Centers Streets Network Reliability and Availability Assessment in Earthquake Emergency

During earthquake emergencies in existing city-centers, streets network permits inhabitants to reach safe areas, and rescuers to access damaged zones and help population. However, the network can suffer from blocks due to debris of collapsed or heavily damaged buildings. Understanding urban fabric modifications and classifying elements vulnerability are fundamental steps while dealing with risk-assessment and risk-reduction strategies. This article offers a first quick approach for assessing seismic vulnerability of paths network by considering interferences with building heritage damages. Quick data about existing urban fabric (e.g., buildings typology; streets and buildings geometries) are combined for developing new vulnerability indices for streets network. The earthquake macroseismic intensity is introduced for evaluating probable street blockages and summarizing the overall rating of risks in critical network locations, thus intensity that is not included in other current quick methods for streets-building interference is here taken into account. Risk-reduction strategies based on the proposed indices could minimize the interventions on architectural heritage, maximizing the safety of evacuees. These new indices could be combined with traditional assessment of buildings vulnerability, and evaluations on pedestrians’ and vehicles evacuation flows, for evaluating management strategies.     

Assessing Seismic Social Vulnerability in Urban Centers — the Case-Study of Nablus,Palestine

ABSTRACT

Seismic risk depends on three factors: seismic hazard, exposure of assets and communities, and vulnerability—physical and social. Whereas hazard and exposure are harder to act upon, vulnerability can be significantly reduced, if properly characterized for each asset, population, or society in general. This article assesses the social vulnerability and resilience level of the city of Nablus, an important urban center in Palestine. The region, considerably exposed to seismic hazard, features, from the in-built view point, very recent or very old historical buildings, without seismic design provisions. On the socio-economic side, the well-known political conflicts and societal challenges are key vulnerability factors. The method employed was based on Social Vulnerability Indicators (SoVI) extracted from census data, integrated with the more recent SCORECARD approach, which was applied to the urban community of Nablus. The goal was both to obtain an overall vulnerability score for the city and to characterize internal differences among its main areas, connected to its historical urban expansion and patterns. The results show that both physical and social vulnerability can be related and that the city development patterns can mirror the relative social vulnerability.