{"title":"Calving Out a Space to Exist: “Marked” Identities in Polar Science’s “Unmarked Spaces”","authors":"Anya Lawrence, Luis Escobedo","doi":"10.3389/esss.2023.10070","DOIUrl":"https://doi.org/10.3389/esss.2023.10070","url":null,"abstract":"For minority employees at the British Antarctic Survey (BAS), the organisation has enriched their careers, while offering equality, diversity and inclusivity (EDI) measures to mitigate some of the issues affecting them. However, the way they belong to BAS remains impacted by the structural and everyday practices that shape their lives through identity processes. In light of BAS’ ambition to enhance Antarctic science opportunities to underrepresented groups, this study engages with the lived experiences and perspectives of minority BAS employees at their workplace. We argue that while they experience and perceive rejection, discrimination and exclusion, these practices are tangled up in the dominant and majority group’s internal identification processes rather than by the isolated and deliberate action of its members. Those who are part of the “unmarked” dominant group have, from an early age, internalised national, ethnic, gender, and other forms of belonging and continue to engage in new boundary demarcation in the present. In this way, it is in their contact with non-members, that the boundaries between the “marked” and “unmarked” come to the fore, even when the intention of the dominant group may be to erode such boundaries.","PeriodicalId":148192,"journal":{"name":"Earth Science, Systems and Society","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131976778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
John Dilworth, J. Stone, K. Yeager, J. Thigpen, M. McGlue
{"title":"Fossil Diatoms Reveal Natural and Anthropogenic History of Jackson Lake (Wyoming, USA)","authors":"John Dilworth, J. Stone, K. Yeager, J. Thigpen, M. McGlue","doi":"10.3389/esss.2023.10065","DOIUrl":"https://doi.org/10.3389/esss.2023.10065","url":null,"abstract":"Jackson Lake supplies valuable cultural and provisioning ecosystem services to the Upper Snake River watershed in Wyoming and Idaho (western USA). Construction of Jackson Lake Dam in the early 20th century raised lake level by ∼12 m, generating an important water resource supporting agriculture and ranching, as well as tourism associated with Grand Teton National Park. Outlet engineering drastically altered Jackson Lake’s surface area, morphology, and relationship with the inflowing Snake River, yet the consequences for nutrient dynamics and algae in the lake are unknown. Here, we report the results of a retrospective environmental assessment completed for Jackson Lake using a paleolimnological approach. Paleoecological (diatoms) and geochemical datasets were developed on a well-dated sediment core and compared with available hydroclimate data from the region, to assess patterns of limnological change. The core spans the termination of the Little Ice Age and extends to the present day (∼1654–2019 CE). Diatom assemblages prior to dam installation are characterized by high relative abundances of plankton that thrive under low nutrient availability, most likely resulting from prolonged seasonal ice cover and perhaps a single, short episode of deep convective mixing. Following dam construction, diatom assemblages shifted to planktic species that favor more nutrient-rich waters. Elemental abundances of sedimentary nitrogen and phosphorous support the interpretation that dam installation resulted in a more mesotrophic state in Jackson Lake after ∼1916 CE. The data are consistent with enhanced nutrient loading associated with dam emplacement, which inundated deltaic wetlands and nearshore vegetation, and perhaps increased water residence times. The results of the study highlight the sensitivity of algal composition and productivity to changes in nutrient status that accompany outlet engineering of natural lakes by humans and have implications for water resource management.","PeriodicalId":148192,"journal":{"name":"Earth Science, Systems and Society","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132575790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. McGlue, John Dilworth, Hillary L. Johnson, S. Whitehead, J. Thigpen, K. Yeager, E. Woolery, Summer J. Brown, S. Johnson, C. Cearley, Gillian M. Clark, T. Dixon, R. Goldsby, Autumn L. Helfrich, B. Hodelka, E. Lo, Leandro Domingos-Luz, N. E. Powell, G. Rasbold, W. Swanger
{"title":"Effect of Dam Emplacement and Water Level Changes on Sublacustrine Geomorphology and Recent Sedimentation in Jackson Lake, Grand Teton National Park (Wyoming, United States)","authors":"M. McGlue, John Dilworth, Hillary L. Johnson, S. Whitehead, J. Thigpen, K. Yeager, E. Woolery, Summer J. Brown, S. Johnson, C. Cearley, Gillian M. Clark, T. Dixon, R. Goldsby, Autumn L. Helfrich, B. Hodelka, E. Lo, Leandro Domingos-Luz, N. E. Powell, G. Rasbold, W. Swanger","doi":"10.3389/esss.2023.10066","DOIUrl":"https://doi.org/10.3389/esss.2023.10066","url":null,"abstract":"Dam installation on a deep hydrologically open lake provides the experimental framework necessary to study the influence of outlet engineering and changing base levels on limnogeological processes. Here, high-resolution seismic reflection profiles, sediment cores, and historical water level elevation datasets were employed to assess the recent depositional history of Jackson Lake, a dammed glacial lake located adjacent to the Teton fault in western Wyoming (USA). Prograding clinoforms imaged in the shallow stratigraphy indicate a recent lake-wide episode of delta abandonment. Submerged ∼11–12 m below the lake surface, these Gilbert-type paleo-deltas represent extensive submerged coarse-grained deposits along the axial and lateral margins of Jackson Lake that resulted from shoreline transgression following dam construction in the early 20th century. Other paleo-lake margin environments, including delta plain, shoreline, and glacial (drumlins, moraines) landforms were likewise inundated following dam installation, and now form prominent features on the lake floor. In deepwater, a detailed chronology was established using 137Cs, 210Pb, and reservoir-corrected 14C for a sediment core that spans ∼1654–2019 Common Era (CE). Dam emplacement (1908–1916 CE) correlates with a nearly five-fold acceleration in accumulation rates and a depositional shift towards carbonaceous sediments. Interbedded organic-rich black diatomaceous oozes and tan silts track changes in reservoir water level elevation, which oscillated in response to regional climate and downstream water needs between 1908 and 2019 CE. Chemostratigraphic patterns of carbon, phosphorus, and sulfur are consistent with a change in nutrient status and productivity, controlled initially by transgression-driven flooding of supralittoral soils and vegetation, and subsequently with water level changes. A thin gravity flow deposit punctuates the deepwater strata and provides a benchmark for turbidite characterization driven by hydroclimate change. Because the Teton fault is a major seismic hazard, end-member characterization of turbidites is a critical first step for accurate discrimination of mass transport deposits controlled by earthquakes in more ancient Jackson Lake strata. Results from this study illustrate the influence of dam installation on sublacustrine geomorphology and sedimentation, which has implications for lake management and ecosystem services. Further, this study demonstrates that Jackson Lake contains an expanded, untapped sedimentary archive recording environmental changes in the American West.","PeriodicalId":148192,"journal":{"name":"Earth Science, Systems and Society","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115347717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Utley, Emma Martin-Roberts, N. Utting, G. Johnson, D. Györe, M. Żurakowska, F. Stuart, A. Boyce, T. Darrah, P. Gulliver, R. Haszeldine, D. Lawton, S. Gilfillan
{"title":"Multi-Isotope Geochemical Baseline Study of the Carbon Management Canada Research Institutes CCS Field Research Station (Alberta, Canada), Prior to CO2 Injection","authors":"R. Utley, Emma Martin-Roberts, N. Utting, G. Johnson, D. Györe, M. Żurakowska, F. Stuart, A. Boyce, T. Darrah, P. Gulliver, R. Haszeldine, D. Lawton, S. Gilfillan","doi":"10.3389/esss.2023.10069","DOIUrl":"https://doi.org/10.3389/esss.2023.10069","url":null,"abstract":"Carbon capture and storage (CCS) is an industrial scale mitigation strategy for reducing anthropogenic CO2 from entering the atmosphere. However, for CCS to be routinely deployed, it is critical that the security of the stored CO2 can be verified and that unplanned migration from a storage site can be identified. A number of geochemical monitoring tools have been developed for this purpose, however, their effectiveness critically depends on robust geochemical baselines being established prior to CO2 injection. Here we present the first multi-well gas and groundwater characterisation of the geochemical baseline at the Carbon Management Canada Research Institutes Field Research Station. We find that all gases exhibit CO2 concentrations that are below 1%, implying that bulk gas monitoring may be an effective first step to identify CO2 migration. However, we also find that predominantly biogenic CH4 (∼90%–99%) is pervasive in both groundwater and gases within the shallow succession, which contain numerous coal seams. Hence, it is probable that any upwardly migrating CO2 could be absorbed onto the coal seams, displacing CH4. Importantly, 4He concentrations in all gas samples lie on a mixing line between the atmosphere and the elevated 4He concentration present in a hydrocarbon well sampled from a reservoir located below the Field Research Station (FRS) implying a diffusive or advective crustal flux of 4He at the site. In contrast, the measured 4He concentrations in shallow groundwaters at the site are much lower and may be explained by gas loss from the system or in situ production generated by radioactive decay of U and Th within the host rocks. Additionally, the injected CO2 is low in He, Ne and Ar concentrations, yet enriched in 84Kr and 132Xe relative to 36Ar, highlighting that inherent noble gas isotopic fingerprints could be effective as a distinct geochemical tracer of injected CO2 at the FRS.","PeriodicalId":148192,"journal":{"name":"Earth Science, Systems and Society","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134505448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Organic Carbon Burial in Constructed Ponds in Southern Sweden","authors":"K. Ljung, Simon Lin","doi":"10.3389/esss.2023.10061","DOIUrl":"https://doi.org/10.3389/esss.2023.10061","url":null,"abstract":"Small ponds constructed for nutrient retention, biodiversity conservation or recreation also store large amounts of carbon. The potential role of small ponds for carbon storage and greenhouse gas emissions have been highlighted both in the scientific literature and in management plans. The role of small ponds in the global carbon budget is likely significant, but the potential has not been fully explored. Here we present measurements of yearly sedimentary carbon accumulation and carbon stocks in six small, constructed and restored ponds in southern Sweden. The ponds were constructed or restored during the last 20 years primarily for nutrient retention. The sediment cores span the time from the construction of the ponds until today. The ponds had high carbon accumulation, with mean total carbon stocks in the top 6 cm of sediment of 836 g C m−2 and a yearly mean C accumulation rate of 152 g C m−2 yr−1. The total amount of restored wetlands within the restoration program studied here has a total area of 480 ha, and upscaling the carbon stocks to the whole area of restored ponds and wetlands gave a total carbon stock of 4.013 × 106 kg C in the top 6 cm of the sediments. If considering the potential increase of CO2 and CH4 from the ponds it is likely that the constructed ponds studied here are net carbon sources. We compared our results with published measurements of CO2 and CH4 emissions from small ponds in Sweden. This shows that the CO2 equivalent emissions could be between 1.8 and 37.5 times higher than the sedimentary carbon accumulation. Our data indicate that small constructed ponds are potential net carbon sources. Therefore, we suggest that using small, constructed, or restored ponds as carbon mitigation strategy must be done with caution, and the potential for increased methane emissions must be considered.","PeriodicalId":148192,"journal":{"name":"Earth Science, Systems and Society","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129226091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Day, H. Geiger, V. Troll, F. Perez‐Torrado, M. Aulinas, G. Gisbert, J. Carracedo
{"title":"Bouncing Spallation Bombs During the 2021 La Palma Eruption, Canary Islands, Spain","authors":"J. Day, H. Geiger, V. Troll, F. Perez‐Torrado, M. Aulinas, G. Gisbert, J. Carracedo","doi":"10.3389/esss.2022.10063","DOIUrl":"https://doi.org/10.3389/esss.2022.10063","url":null,"abstract":"Incandescent pyroclasts of more than 64 mm in diameter erupted from active volcanoes are known as bombs and pose a significant hazard to life and infrastructure. Volcanic ballistic projectile hazard assessment normally considers fall as the main transport process, estimating its intensity from bomb location and impact cratering. We describe ballistically ejected bombs observed during the late October 2021 episode of eruption at La Palma (Canary Islands) that additionally travelled downhill by rolling and bouncing on the steep tephra-dominated cone. These bouncing bombs travelled for distances >1 km beyond their initial impact sites, increasing total travel distance by as much as 100%. They left multiple impact craters on their travel path and frequently spalled incandescent fragments on impact with substrate, leading to significant fire hazard for partially buried trees and structures far beyond the range of ballistic transport. We term these phenomena as bouncing spallation bombs. The official exclusion zone encompassed this hazard at La Palma, but elsewhere bouncing spallation bombs ought to be accounted for in risk assessment, necessitating awareness of an increased hazard footprint on steep-sided volcanoes with ballistic activity.","PeriodicalId":148192,"journal":{"name":"Earth Science, Systems and Society","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132630221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mexico City—Ambitions and Challenges of Integrated Risk Management in a Fractured Urban Planning Context","authors":"Soledad Garcia Ferrari, Emma R. Morales, A. Bain","doi":"10.3389/esss.2022.10059","DOIUrl":"https://doi.org/10.3389/esss.2022.10059","url":null,"abstract":"Among the growing number of megacities, Mexico City stands out for its size and population, but also for its challenges with respect to environmental risk management, fractured governance and marked contrasts in urban conditions. In the last couple of decades, Mexico City has been praised for pioneering new management structures for planning and policy development, driving an approach rooted in a strong social commitment and sustainability agenda, with more integrated decision-making across government institutions. Among these instruments is the recent Law of Integrated Risk Management and Civil Protection of Mexico City, which boldly steps ahead of national legislation, moving from a reactive to a precautionary approach to disaster risk under the banner of stakeholder co-responsibility. However, this paper shows that Mexico City has also been the stage of innovative policies that have been hijacked by the powerful, tainted by corruption and reinterpreted to fit financial interests, or simply abandoned with the arrival of new administrations. The efficiency of these innovative strategies has therefore thus far been limited by discretionary practices and poor communication and socialisation. Our research over the past 5 years has explored risk management processes in Mexico and Mexico City through a transdisciplinary investigation of the vulnerability to climate change-related hydro-meteorological risks in low-income urban areas, and the capacities to manage risk at the community and institutional levels. Drawing on this research, this paper describes a range of accomplishments in urban and environmental policy innovation in Mexico City in recent years with relevance to risk management, and the opportunities for learning arising from the challenges, limitations, and failures. The paper argues that, despite extensive existing knowledge of the socio-technical elements of risk in the city, in particular in relation to hydro-meteorological and seismic risks, fragmented urban development policies and institutions have contributed to increasing the vulnerability of poor communities in high-risk areas of the city. The paper concludes that addressing the challenges of integrated risk management in this fractured urban planning context will require that the recently-created institutions are adaptive, to cope with evolving socio-economic contexts and physical hazards, build strong links with academia to harness social and technical knowledge, design long-term plans integrated across tiers of government to increase coordination, and generate strong and inclusive engagement of the city’s heterogeneous communities. These elements are crucial to allow Mexico City’s ambitions of integrated risk management to survive political cycles and avoid appropriation by short-term financial interests over real risk reduction.","PeriodicalId":148192,"journal":{"name":"Earth Science, Systems and Society","volume":"147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131052634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Lawley, M. Mitchell, D. Stralberg, R. Schuster, Eliot J. B. McIntire, J. Bennett
{"title":"Mapping Canada’s Green Economic Pathways for Battery Minerals: Balancing Prospectivity Modelling With Conservation and Biodiversity Values","authors":"C. Lawley, M. Mitchell, D. Stralberg, R. Schuster, Eliot J. B. McIntire, J. Bennett","doi":"10.3389/esss.2022.10064","DOIUrl":"https://doi.org/10.3389/esss.2022.10064","url":null,"abstract":"Electrification of Canada’s energy and transport sectors is essential to achieve net-zero emissions by 2050 and will require a vast amount of raw materials. A large proportion of these critical raw materials are expected to be sourced from as yet undiscovered mineral deposits, which has the potential to accelerate environmental pressures on natural ecosystems. Herein we overlay new prospectivity model results for a major source of Canada’s battery minerals (i.e., magmatic Ni ± Cu ± Co ± PGE mineral systems) with five ecosystem services (i.e., freshwater resources, carbon, nature-based recreation, species at risk, climate-change refugia) and gaps in the current protected-area network to identify areas of high geological potential with lower ecological risk. New prospectivity models were trained on high-resolution geological and geophysical survey compilations using spatial cross-validation methods. The area under the curve for the receive operating characteristics (ROC) plot and the preferred gradient boosting machines model is 0.972, reducing the search space for more than 90% of deposits in the test set by 89%. Using the inflection point on the ROC plot as a threshold, we demonstrate that 16% of the most prospective model cells partially overlap with the current network of protected and other conserved areas, further reducing the search space for new critical mineral deposits. The vast majority of the remaining high prospectivity cells correspond to ecoregions with less than half of the protected areas required to meet national conservation targets. Poorly protected ecoregions with one or more of the five ecosystem services are interpreted as hotspots with the highest potential for conflicting land-use priorities in the future, including parts of southern Ontario and Québec, western Labrador, and northern Manitoba and Saskatchewan. Managing hotspots with multiple land-use priorities would necessarily involve partnerships with both Indigenous peoples whose traditional lands are affected, and other impacted communities. We suggest that prospectivity models and other machine learning methods can be used as part of natural resources management strategies to balance critical mineral development with conservation and biodiversity values.","PeriodicalId":148192,"journal":{"name":"Earth Science, Systems and Society","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123293534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. B. Walls, D. Banks, T. Peshkur, A. Boyce, N. Burnside
{"title":"Heat Recovery Potential and Hydrochemistry of Mine Water Discharges From Scotland’s Coalfields","authors":"D. B. Walls, D. Banks, T. Peshkur, A. Boyce, N. Burnside","doi":"10.3389/esss.2022.10056","DOIUrl":"https://doi.org/10.3389/esss.2022.10056","url":null,"abstract":"Prospective and operational mine water geothermal projects worldwide have faced challenges created by mine water chemistry (e.g., iron scaling, corrosion) and high expenditure costs (e.g., drilling or pumping costs) among others. Gravity fed or actively pumped drainages can be cheaper sources of low-carbon mine water heating when coupled with adequately sized heat exchanger and heat pump hardware. They also provide valuable chemical data to indicate mine water quality of associated coalfields. Field collection of temperature and flow rate data from mine water discharges across the Midland Valley of Scotland, combined with existing data for Coal Authority treatment schemes suggest that mine water heat pumps could provide a total of up to 48 MW of heat energy. Chemical characterisation of mine waters across the research area has created a valuable hydrochemical database for project stakeholders investigating mine water geothermal systems using boreholes or mine water discharges for heating or cooling purposes. Hydrochemical analytical assessment of untreated gravity discharges found that most are circumneutral, non-saline waters with an interquartile range for total iron of 2.0–11.6 mg/L. Stable isotope analysis indicates that the discharges are dominated by recent meteoric waters, but the origin of sulphate in mine waters is not as simple as coal pyrite oxidation, rather a more complex, mixed origin. Untreated gravity discharges contribute 595 kg/day of iron to Scottish watercourses; thus, it is recommended that when treatment schemes for mine water discharges are constructed, they are co-designed with mine water geothermal heat networks.","PeriodicalId":148192,"journal":{"name":"Earth Science, Systems and Society","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130004904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Use of Subsurface Geology in Assessing the Optimal Co-Location of CO2 Storage and Wind Energy Sites","authors":"I. de Jonge-Anderson, J. Underhill","doi":"10.3389/esss.2022.10055","DOIUrl":"https://doi.org/10.3389/esss.2022.10055","url":null,"abstract":"Opportunities exist to re-purpose depleted gas fields in the Southern North Sea as CO2 storage sites if, where and when they meet the right set of geological, engineering, and non-technical criteria. Fields positioned on the western edge of the basin are attractive as they lie close to the major industrial emitters of East England which need to decarbonise if the UK’s Net Zero targets are to be met. Having stopped production in 2018, Pickerill has CO2 storage potential as it is a proven trap from which around 440 Bcf of gas has been produced and it is located near the coastline. We use a public-domain 3D seismic dataset, wireline logs, core reports and production data to assess its CO2 storage potential. The Rotliegend Group reservoir (Leman Sandstone Formation) is a mixed aeolian/fluvial succession with variable thickness (25 m–80 m), high net-to-gross (0.9–1.0), moderate average porosity (9%–17%) and fair-average permeability (>1 mD). The seal is Zechstein Group evaporites and carbonates which thin and swell in response to their post-depositional mobility (halokinesis), further affecting and deforming the overburden. The structure is defined to the south by a WNW-ESE-striking fault system, but the north of the field is characterised mostly by dip closure of the reservoir. NW-SE-striking faults transect the field and segment the structure into several compartments, three of which appear particularly good candidates for CO2 storage and have a combined CO2 storage capacity of 32 MtCO2. If combined with nearby satellite fields, there is potential for the development of a CO2 storage cluster capable of sequestering 60 MtCO2, however, this potential is challenged by the planned development of an offshore wind farm. Turbines fixed to the seabed over the field would restrict where new CO2 injection wells might be drilled and efforts to measure, monitor and verify the CO2 plume using conventional towed-streamer seismic. There is an urgent need to resolve the competition for offshore acreage to ensure that attractive CO2 storage sites like Pickerill are not disadvantaged but can play a full part in complementing alternative renewable energy sources within the energy transition.","PeriodicalId":148192,"journal":{"name":"Earth Science, Systems and Society","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129877643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}