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Metal isotope tracers (e.g., 87Sr/86Sr, 7Li/6Li; 138Ba/134Ba) are being employed worldwide to understand downhole processes and assess the environmental impact of hydraulic fracturing. These isotope signatures can be much more sensitive than geochemical tracers alone in discriminating between contaminant sources. This can be particularly useful when time has elapsed after an event and a contaminant has been substantially diluted, or in being able to quickly detect the intrusion of a brine with high total dissolved solids (TDS) into a protected water resource. In some cases, such as areas with multiple sources of water contaminants and overlapping chemical signatures, a multi-proxy approach is recommended. The combination of element ratio and isotopic tracers (e.g. Sr/Ca and 87Sr/86Sr) or multi-isotope tracers (e.g., 87Sr/86Sr and d7Li) can be used to discriminate between multiple contaminant sources and provide important information about the processes involved in concentrating, mobilizing or retaining a contaminant.
The Energy Information Administration (EIA) has assessed 46 countries for their technically recoverable unconventional oil and gas reserves. They estimate the global shale gas reserves at 7,577 Tcf (trillion cubic feet) and the global shale oil reserves at 419 billion bbl (barrels). The 10 largest reserves for shale gas are in China, Argentina, Algeria, United States, Canada, Mexico, Australia, South Africa, Russia, and Brazil. The European Union also has significant deposits with the majority located in Poland and France. The 10 largest reserves for shale oil are in the United States, Russia, China, Argentina, Libya, United Arab Emirates, Chad, Australia, Venezuela, and Mexico. To date, only the United States and Canada have reached commercial level production for shale gas and oil, followed to a lesser extent by China and Argentina. Australia has seen its efforts concentrate on liquified natural gas (LNG) and export. Most other countries remain in the exploratory phase or have halted development. This chapter provides a brief review of the major shale gas and oil plays based on the extensive assessment done by the EIA, and the current status of their development.
In late 2008 increasingly high concentrations of total dissolved solids (TDS) exceeding Federal Safe Drinking Water Act (SDWA/PL 93-523) standards of 500 milligrams per liter (mg/L) for public water supplies were found in the Monongahela River. The Pennsylvania Department of Environmental Protection (PA DEP) began investigating TDS levels at points along approximately 70 stream miles on the Monongahela River from the West Virginia border to the confluence with the Youghiogheny River. In response, the West Virginia Water Research Institute (WVWRI) spearheaded a long-term water quality monitoring program in the Monongahela River Basin to identify sources and potential remediation options. The team found that modulation of the discharge volume from acid mine drainage treatment plants along the river could control TDS and sulfate levels below SDWA limits. Operators of the AMD treatment plants implemented the newly developed discharge management plan. The monitoring program expanded in 2012 to include the Allegheny and Upper Ohio River basins, adopting the name Three Rivers Quest (3RQ).
Dominant geopolitical narratives on the Arctic argue that the region is either edging towards conflict or international law is respected and peace is maintained through cooperation to address shared concerns. While both of these narratives are present in the Arctic states’ strategies, most of them tend to support collaborative efforts. Science diplomacy (SD) is a useful mechanism in this regard as it helps states overcome potential disagreements and can stimulate cooperation in other areas. Given the growing concerns about global risks, SD is more important now than ever before. In our study, we identify and focus on three indicators for potential SD in the Arctic strategies: i) scientific infrastructure; ii) membership in intergovernmental/interparliamentary and scientific/education organisations and networks and iii) specific areas of scientific cooperation. Considering the intensive scientific activity in the region, it is not surprising that the strategies discuss different forms of research and scientific cooperation, although none explicitly use the term “science diplomacy”. Nevertheless, our analysis reveals the Arctic states do apply the SD concept in their strategies and use three types of diplomacy – science in diplomacy, science for diplomacy or diplomacy for science – in the three indicators.
The present article extends recent studies that ask what might else have been considered by Scott and Amundsen in planning their sledging operations to reach the South Pole during the southern summer of 1911/12. Both were on the cusp of changes in exploration methods and had at hand significant knowledge from past expeditions. Scott’s preparations were based on British Arctic experiences using several haulage methods including the recent innovation, motor sledges. He had little success with them although more research and experimentation might have made them valuable. Amundsen’s integrated program was based on previous American and Norwegian exploration in the Arctic and Antarctica. The race was between two men with very different backgrounds. Scott and Amundsen belonged to the same generation, Scott followed the romantic tradition of heroism as suffering; whereas Amundsen came from a culture that did not value unnecessary risk to life and limb. He won the race with a different organizational type and a different approach to gathering and using knowledge. Evolutionary economics with its focus on organizational structure and its impact on the use of knowledge and innovation is used to evaluate the plans and results of Scott and Amundsen.
A review of historical documents concerning the 1859 discovery of the skeleton of a member of the 1845 Franklin expedition on southern King William Island revealed a significant but previously unrecognized geographical error about the site’s reported and mapped location. Archeological investigations conducted in 2019 established the site’s correct location and the fact that it had unwittingly been rediscovered in 1973. Misconceptions concerning the site’s location and key aspects of its interpretation highlight the importance of careful evaluation of historical and archeological data regarding the 1845 Franklin expedition.
The archipelago of Svalbard is a good example of an Arctic locale undergoing rapid changes on multiple levels. This contribution is a joint effort of three anthropologists with up-to-date ethnographic data from Svalbard (mostly Longyearbyen and Barentsburg) to frame and interpret interconnected changes. The processes impacting Svalbard are related to issues such as geopolitical interests, and increasing pressure by the Norwegian government to exercise presence and control over the territory. Our interpretations are based on a bottom-up approach, drawing on experiences living in the field. We identify three great ruptures in recent years – the avalanche of 2015, the gradual phasing out of mining enterprises and the COVID-19 pandemic – and show how they further impact, accelerate or highlight preexisting vulnerabilities in terms of socio-economic development, and environmental and climate change. We discuss the shift from coal mining to the industries of tourism, education, and research and development, and the resulting changed social and demographic structure of the settlements. Another facet is the complexity of environmental drivers of change and how they relate to the socio-economic ones. This article serves as an introductory text to the collection of articles published in Polar Record in 2021/2022 with the overarching theme “changing Svalbard”. Issues discussed range from socio-economic change and its implications for local populations including identity of place, through tourism (value creation, mediation, human–environment relations, environmental dilemmas, balancing contradictory trends), to security and risk perception, and environmental and climate change issues.
Prior to 2009, it had been generally accepted that Captain Crozier was born in September 1796 and most likely on the 17th of that month. Further research, published in this Journal, then suggested that upon a fresh scrutiny of the evidence the alternative date of 16 August 1796 was more probable. This note proposes that whilst the date of 16 August was of significance to Captain Crozier, that significance was other than natal and furthermore that alternative evidence, namely a letter dated 20 March 1810 from his father to the 3rd Marquess of Downshire, records his date of birth as being 17 October 1796.
The development of unconventional oil and gas shales using hydraulic fracturing and directional drilling is currently a focal point of energy and climate change discussions. While this technology has provided access to substantial reserves of oil and gas, the need for large quantities of water, emissions, and infrastructure raises concerns over the environmental impacts. Written by an international consortium of experts, this book provides a comprehensive overview of the extraction from unconventional reservoirs, providing clear explanations of the technology and processes involved. Each chapter is devoted to different aspects including global reserves, the status of their development and regulatory framework, water management and contamination, air quality, earthquakes, radioactivity, isotope geochemistry, microbiology, and climate change. Case studies present baseline studies, water monitoring efforts and habitat destruction. This book is accessible to a wide audience, from academics to industry professionals and policy makers interested in environmental pollution and petroleum exploration.
It has been argued that science diplomacy (SD) helps avoid or mitigate conflicts among stakeholders in the Arctic. Yet underlying some of these well-intended and sometimes successful initiatives is a one-sided understanding of SD. The most recent literature takes a more differentiated approach towards the means and ends of SD. It shows that international scientific interaction is shaped by the twofold logic of competition and collaboration. Instruments of SD can be meant to serve national interests, collective regional goals or global agendas. The present paper disentangles these confounding discourses of collaboration and competition based on a conceptually enhanced SD framework. It analyses Arctic strategies and two cases of Arctic SD, the Agreement on Enhancing International Arctic Scientific Cooperation and research activities on Svalbard, to reveal the mechanisms of collaboration and competition in the sphere of international science in relation to security, environment and economy. By pointing out where and how science is currently being used in the Arctic, this article provides (a) a systematic overview of the state of SD in the region and (b) a tool for policy-makers and scientists to assess what impact different facets of SD have in Arctic politics.
The purpose of this case study was to examine the short-term development of performance and aerobic endurance following prolonged low-intensity ski trekking (LIST) in an Arctic region. Two male recreational athletes (aged 24 and 26 years) with high aerobic fitness performed LIST 7 ± 2 h·day−1 for 23 consecutive days, while hauling sledges (∼80 kg initially) with supplies from the north to the south of Svalbard (∼640 km). Time to exhaustion, maximal oxygen uptake (V̇O2max), lactate threshold (LT) and work economy were evaluated at pre- and post-trek. The results showed that the absolute and relative exercise intensity during LIST were ∼3.9 km·h−1 and ∼60% of maximal heart rate, respectively. Time to exhaustion during a ∼4–6 min ramp walking test, and a >45 min stepwise walking test, while pulling 12.5 kg weights (simulation of ski trekking with loaded sledge), increased by 11–17% and 3–9%, respectively, following LIST. Body mass and V̇O2max relative to body mass (ml·kg−1·min−1) decreased by 5–8% and increased by 3–8%, respectively. Furthermore, the workload associated with LT and LT percentage of V̇O2max increased by 39–69% and 12–13%, respectively. No notable change in work economy was observed. The mean pace during LIST (∼3.9 km·h−1) corresponded to the treadmill walking speed (4 km·h−1) with the lowest oxygen cost (mL·kg−1·m−1) in both participants. It can be concluded that short-term prolonged LIST can improve ski trek-simulated performance and fractional utilisation of V̇O2max in recreational athletes with high aerobic fitness. Moreover, highly aerobically fit ski trekkers appear to instinctively choose the most energy-efficient pace during LIST.
As part of a project aiming to determine the lichenised fungal biodiversity of James Ross Island (Eastern coast of Antarctic Peninsula), we identified three infrageneric taxa which were previously not reported from Antarctica: Farnoldia micropsis (A. Massal.) Hertel, Gyalolechia epiphyta (Lynge) Vondrák and Placidium squamulosum var. argentinum (Räsänen) Breuss. Detailed morphological and anatomical properties of these species along with photographs based on the Antarctic specimens are provided here. In addition, the nrITS, mtSSU and/or RPB1 gene regions of the selected specimens are studied and the phylogenetic positions of the species are discussed. The DNA sequence data for Farnoldia micropsis are provided for the first time. Farnoldia micropsis and Gyalolechia epiphyta are also new to the Southern Hemisphere.
In the context of socio-economic transformation of Svalbard, from a place dominated by the coal mining industry to a nature-based tourism destination, the article focuses on how this transformation is co-created with material objects of coal mining remnants. These seemingly marginal, insignificant or even out-of-place remnants of coal mining activity (such as rusty barrels or collapsing infrastructure) have become, by law, a protected part of the Svalbard environment, a cultural heritage. Based on the relational (more-than-human) ethnography of guided tours, the analysis shows that this transformation is co-creating the characteristics of both the past of coal mining and the present notion of wilderness. It demonstrates the process not only as a transformation of interpretations, knowledge and values but also as a transformation of relations with non-human components of the environment. Rather contextual than linear shifts in a biography of the objects, together with the temporality of the objects and their porous character, play a significant role in the Svalbard’s transformation into a nature-based tourism destination.
This chapter aims to summarize current knowledge regarding the fluid dynamics of wind in canopies and to emphasize aspects that are the most relevant in the context of forest fires. We describe the main characteristics of wind flows in the lower part of the boundary layer, starting from the main features in homogeneous canopies, including velocity and turbulence profiles and characteristics of turbulent structures. Then we address two specific cases of heterogeneous canopies, the clearing-to-forest and the forest-to-clearing transitions, which have been extensively studied. The next section is dedicated to wind flow modeling and how such modeling is used in fire models. Finally, special focus is placed on wind measurement in the context of fire experiments. In this chapter, the feedbacks of fire on wind, as well as atmospheric stability, are not addressed. More information on these topics can be found in Chapters 4 and 8, respectively.
Coupled fire–atmosphere feedback is essential for modeling wildland fire spread, especially extreme fire phenomena. In this chapter, the suite of current and emerging tools capable of modeling this complexity is examined; these tools now dominate fundamental wildland fire research and are starting to be applied to fire operations, training, and planning. Some of the barriers to progress and challenges to validating these tools highlighted in this chapter suggest more emphasis on three areas: a scale-dependent and purposeful approach to comparing model results with appropriate observations, recognizing the limitations of each; the quantification of the errors and under-specifications in fuel properties and the impact of each; and assessing large-scale simulations and directing observations to address priority research gaps, from a position informed by the vast catalog of atmospheric scientific research.
This chapter describes the interactions between three-dimensional fuel metrics, intrinsic fuel properties, plant functional traits, and physical characteristics of fuels that inform a new understanding of fire and vegetation feedbacks. The integration of these themes introduces a new synthetic model of fire–vegetation feedbacks. Interrelated concepts of fire, fluid flow, functional traits, and computational fluid dynamics fire behavior models are discussed within the synthetic model framework.
To “spread like wildfire” is a phrase used to describe something that propagates unexpectedly, rapidly, and incessantly. Much of the unpredictable behavior of a wildfire stems from processes including the heat released from the combustion zone (flames), the structure and condition of fuels, the wind field and turbulence driving the fire, and terrain. However, the chemical make-up of the biomass fuel that powers a wildfire also provides a source for the capricious nature of combustion and the behavior of wildfires. This chapter provides a brief overview of the chemistry of biomass fuels and the chemical processes by which such fuels combust and release the energy that enables the fire to become self-sustaining. It then looks in some detail at the mechanisms through which the combustion chemistry driving the heat release from the fuels is influenced by the environment surrounding the combustion zone. In the worst instances these mechanisms can result in fire behavior that causes widespread death and destruction often over a very short period of time. In the best instances they enable fire to be used as a reliable tool for reducing the hazard present in the wild landscapes of our countryside and surrounding our homes.
We present a discussion of the structure of line fires, a canonical configuration in wildland fire research. This configuration allows detailed studies of the effects of wind and sloped terrain on heat transfer and fire spread mechanisms at flame scale. We emphasize in the discussion the existence of two limiting flame regimes in line fires: the plume-dominated regime, in which the flame is detached from the ground, and the wind or slope-driven regime, in which the flame is attached to that surface. These two regimes correspond to dramatically different flame structures, flow patterns, modes of heat transfer, and flame spread mechanisms. The transition between the two flame regimes is discussed in terms of critical values of Byram's convection number or slope angle. We limit our discussion to a simplified configuration corresponding to gas-fueled flames. Hence the heat release rate of the flame is controlled and the flame is non-spreading; difficulties associated with real wildland fuel are left out of the discussion. The structure of the line fires is discussed through results from high-resolution simulations of laboratory-scale flames based on a large eddy simulation (LES) approach. Additional insight is also obtained through a scaling analysis based on an integral model.