Scientific Drilling最新文献

{"title":"Composite development and stratigraphy of the Onepoto maar lake sediment sequence (Auckland Volcanic Field, New Zealand)","authors":"Benjamin Läuchli, P. Augustinus, Leonie Peti, J. Hopkins","doi":"10.5194/SD-29-19-2021","DOIUrl":"https://doi.org/10.5194/SD-29-19-2021","url":null,"abstract":"Abstract. The accurate and precise reconstruction of Quaternary\u0000climate as well as the events that punctuate it is an important driver of the study\u0000of lake sediment archives. However, until recently lake sediment-based\u0000palaeoclimate reconstructions have largely concentrated on Northern\u0000Hemisphere lake sequences due to a scarcity of continuous and\u0000high-resolution lake sediment sequences from the Southern Hemisphere,\u0000especially from the southern mid-latitudes. In this context, the deep maar\u0000lakes of the Auckland Volcanic Field of northern New Zealand are significant\u0000as several contain continuous and well-laminated sediment sequences. Onepoto\u0000Basin potentially contains the longest temporal lake sediment record from\u0000the Auckland Volcanic Field (AVF), spanning from Marine Isotope Stage 6e (MIS 6e) to the early Holocene when lacustrine\u0000sedimentation was terminated by marine breach of the south-western crater\u0000tuff ring associated with post-glacial sea-level rise. The Onepoto record\u0000consists of two new, overlapping cores spanning ca. 73 m combined with\u0000archive material in a complete composite stratigraphy. Tephrochronology and\u0000 14 C dating provide the fundamental chronological framework for the core,\u0000with magnetic relative palaeo-intensity variability downcore, and meteoric\u0000 10 Be influx into the palaeolake to refine the chronology. The µ -XRF (micro X-ray fluorescence)\u0000downcore variability for the entirety of the lake sediment sequence has\u0000been established with measurement of a range of proxies for climate\u0000currently underway. This work will produce the first continuous record of\u0000the last 200 kyr of palaeoclimate from northern New Zealand to date.","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"65 1","pages":"19-37"},"PeriodicalIF":1.2,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84483179","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":"New geophysical memory-logging system for highly unstable and inclined scientific exploration drilling","authors":"J. Kück, Marco Groh, Martin Töpfer, A. Jurczyk, U. Harms","doi":"10.5194/SD-29-39-2021","DOIUrl":"https://doi.org/10.5194/SD-29-39-2021","url":null,"abstract":"Abstract. We established a cable-free memory-logging system for drill-string-deployed geophysical borehole measurements. For more than 20 years,\u0000various so-called “logging while tripping” (LWT) techniques have been available in\u0000the logging service industry. However, this method has rarely been used in\u0000scientific drilling, although it enables logging in deviated and unstable\u0000boreholes, such as in lacustrine sediment drilling projects. LWT operations\u0000have a far lower risk of damage or loss of downhole logging equipment compared with\u0000the common wireline logging. For this\u0000purpose, we developed, tested, and commissioned a modular memory-logging system that does not require drill string\u0000modifications, such as special collars, and can be deployed in standard\u0000wireline core drilling diameters (HQ, bit size of 96 mm, and PQ, bit size of 123 mm). The battery-powered, autonomous\u0000sondes register the profiles of the natural GR (gamma radiation) spectrum, sonic\u0000velocity, magnetic susceptibility, electric resistivity, temperature, and\u0000borehole inclination in high quality while they are pulled out along with the drill\u0000string. As a precise depth measurement carried out in the drill rig is\u0000just as important as the actual petrophysical downhole measurements, we\u0000developed depth-measuring devices providing a high accuracy of less than 0.1 m deviation from the wireline-determined depth. Moreover, the modular structure of\u0000the system facilitates sonde deployment in online mode for wireline\u0000measurements.","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"35 1","pages":"39-48"},"PeriodicalIF":1.2,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85127385","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":"Geohazard detection using 3D seismic data to enhance offshore scientific drilling site selection","authors":"David R. Cox, P. Knutz, D. Campbell, J. Hopper, A. Newton, M. Huuse, K. Gohl","doi":"10.5194/sd-28-1-2020","DOIUrl":"https://doi.org/10.5194/sd-28-1-2020","url":null,"abstract":"Abstract. A geohazard assessment workflow is presented that maximizes the use of 3D seismic reflection data to improve the safety and success of offshore\u0000scientific drilling. This workflow has been implemented for International\u0000Ocean Discovery Program (IODP) Proposal 909 that aims to core seven sites\u0000with targets between 300 and 1000 m below seabed across the north-western Greenland continental shelf. This glaciated margin is a frontier petroleum province containing potential drilling hazards that must be avoided during drilling.\u0000Modern seismic interpretation techniques are used to identify, map and\u0000spatially analyse seismic features that may represent subsurface drilling\u0000hazards, such as seabed structures, faults, fluids and challenging\u0000lithologies. These hazards are compared against the spatial distribution of\u0000stratigraphic targets to guide site selection and minimize risk. The 3D\u0000seismic geohazard assessment specifically advanced the proposal by providing\u0000a more detailed and spatially extensive understanding of hazard distribution\u0000that was used to confidently select eight new site locations, abandon four others and fine-tune sites originally selected using 2D seismic data. Had several\u0000of the more challenging areas targeted by this proposal only been covered by\u00002D seismic data, it is likely that they would have been abandoned,\u0000restricting access to stratigraphic targets. The results informed the\u0000targeted location of an ultra-high-resolution 2D seismic survey by\u0000minimizing acquisition in unnecessary areas, saving valuable resources. With future IODP missions targeting similarly challenging frontier environments\u0000where 3D seismic data are available, this workflow provides a template for\u0000geohazard assessments that will enhance the success of future scientific\u0000drilling.","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"30 1","pages":"1-27"},"PeriodicalIF":1.2,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85936175","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":"Report on ICDP Deep Dust workshops: probing continental climate of the late Paleozoic icehouse–greenhouse transition and beyond","authors":"G. Soreghan, L. Beccaletto, K. Benison, S. Bourquin, G. Feulner, N. Hamamura, M. Hamilton, N. Heavens, L. Hinnov, Adam K. Huttenlocker, C. Looy, Lily S. Pfeifer, S. Pochat, Mehrdad Sardar Abadi, James J. Zambito","doi":"10.5194/sd-28-93-2020","DOIUrl":"https://doi.org/10.5194/sd-28-93-2020","url":null,"abstract":"Abstract. Chamberlin and Salisbury's assessment of the Permian a century ago captured the essence of the period: it is an interval of extremes yet one sufficiently recent to have affected a biosphere with near-modern complexity. The events of the Permian – the orogenic episodes, massive biospheric turnovers, both icehouse and greenhouse antitheses, and Mars-analog lithofacies – boggle the imagination and present us with great opportunities to explore Earth system behavior. The ICDP-funded workshops dubbed “Deep Dust,” held in Oklahoma (USA) in March 2019 (67 participants from nine countries) and Paris (France) in January 2020 (33 participants from eight countries), focused on clarifying the scientific drivers and key sites for coring continuous sections of Permian continental (loess, lacustrine, and associated) strata that preserve high-resolution records. Combined, the two workshops hosted a total of 91 participants representing 14 countries, with broad expertise. Discussions at Deep Dust 1.0 (USA) focused on the primary research questions of paleoclimate, paleoenvironments, and paleoecology of icehouse collapse and the run-up to the Great Dying and both the modern and Permian deep microbial biosphere. Auxiliary science topics included tectonics, induced seismicity, geothermal energy, and planetary science. Deep Dust 1.0 also addressed site selection as well as scientific approaches, logistical challenges, and broader impacts and included a mid-workshop field trip to view the Permian of Oklahoma. Deep Dust 2.0 focused specifically on honing the European target. The Anadarko Basin (Oklahoma) and Paris Basin (France) represent the most promising initial targets to capture complete or near-complete stratigraphic coverage through continental successions that serve as reference points for western and eastern equatorial Pangaea.","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82305293","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":"Haiti-Drill: an amphibious drilling project workshop","authors":"C. Aiken, R. Wessels, M. Cormier, F. Klingelhoefer, A. Battani, F. Rolandone, W. Roest, D. Boisson, K. Guerrier, R. Momplaisir, Nadine Ellouz-Zimmerman","doi":"10.5194/sd-28-49-2020","DOIUrl":"https://doi.org/10.5194/sd-28-49-2020","url":null,"abstract":"Abstract. The Haiti region – bounded by two strike-slip faults\u0000expressed both onshore and offshore – offers a unique opportunity for an\u0000amphibious drilling project. The east–west (EW)-striking, left lateral strike-slip Oriente–Septentrional fault zone and Enriquillo–Plantain Garden fault zone\u0000bounding Haiti have similar slip rates and also define the northern and southern\u0000boundaries of the Gonâve Microplate. However, it remains unclear how\u0000these fault systems terminate at the eastern boundary of that microplate.\u0000From a plate tectonic perspective, the Enriquillo–Plantain Garden fault zone\u0000can be expected to act as an inactive fracture zone bounding the Cayman\u0000spreading system, but, surprisingly, this fault has been quite active during\u0000the last 500 years. Overall, little is understood in terms of past and\u0000present seismic and tsunami hazards along the Oriente–Septentrional fault\u0000zone and Enriquillo–Plantain Garden fault zone, their relative ages,\u0000maturity, lithology, and evolution – not even the origin of fluids escaping through the crust is known. Given these unknowns, the Haiti-Drill workshop was held\u0000in May 2019 to further develop an amphibious drilling project in the Haiti\u0000region on the basis of preproposals submitted in 2015 and their reviews.\u0000The workshop aimed to complete the following four tasks: (1) identify significant research\u0000questions; (2) discuss potential drilling scenarios and sites; (3) identify\u0000data, analyses, additional experts, and surveys needed; and (4) produce\u0000timelines for developing a full proposal. Two key scientific goals have been set, namely to understand the nature of young fault zones and the evolution of transpressional boundaries. Given these goals, drilling targets were then\u0000rationalized, creating a focus point for research and/or survey needs prior to\u0000drilling. Our most recent efforts are to find collaborators, analyze\u0000existing data, and to obtain sources of funding for the survey work that is\u0000needed.\u0000","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"60 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90259000","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":"Hipercorig – an innovative hydraulic coring system recovering over 60 m long sediment cores from deep perialpine lakes","authors":"U. Harms, U. Raschke, F. Anselmetti, M. Strasser, V. Wittig, M. Wessels, S. Schaller, S. Fabbri, R. Niederreiter, A. Schwalb","doi":"10.5194/sd-28-29-2020","DOIUrl":"https://doi.org/10.5194/sd-28-29-2020","url":null,"abstract":"Abstract. The record of past environmental conditions and changes archived in lacustrine sediments serves as an important element in paleoenvironmental and climate research. A main barrier in accessing these archives is the undisturbed recovery of long cores from deep lakes. In this study, we have developed and tested a new, environmentally friendly coring tool and modular barge, centered around a down-the-hole hydraulic hammering of an advanced piston coring system, called the Hipercorig. Test beds for the evaluation of the performance of the system were two periglacial lakes, Mondsee and Constance, located on the northern edge of the Alpine chain. These lakes are notoriously difficult to sample beyond ∼ 10 m sediment depths due to dense glacial deposits obstructing deeper coring. Both lakes resemble many global lake systems with hard and coarse layers at depth, so the gained experience using this novel technology can be applied to other lacustrine or even marine basins. These two experimental drilling projects resulted in up to 63 m coring depth and successful coring operations in up to 204 m water depth, providing high-quality, continuous cores with 87 % recovery. Initial core description and scanning of the 63 m long core from Mondsee and two 20 and 24 m long cores from Lake Constance provided novel insights beyond the onset of deglaciation of the northern Alpine foreland dating back to ∼ 18 400 cal BP.\u0000","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"44 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85829510","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":"A new high-temperature borehole fluid sampler: the Multi-Temperature Fluid Sampler","authors":"C. Wheat, C. Kitts, C. Webb, Rachel Stolzman, Ann McGuire, T. Fournier, T. Pettigrew, H. Jannasch","doi":"10.5194/sd-28-43-2020","DOIUrl":"https://doi.org/10.5194/sd-28-43-2020","url":null,"abstract":"Abstract. Deep ( >1  km depth) scientific boreholes are unique assets\u0000that can be used to address a variety of microbiological, hydrologic, and\u0000biogeochemical hypotheses. Few of these deep boreholes exist in oceanic\u0000crust. One of them, Deep Sea Drilling Project Hole 504B, reaches\u0000 ∼190 ∘ C at its base. We designed, fabricated, and\u0000laboratory-tested the Multi-Temperature Fluid Sampler (MTFS), a non-gas-tight, titanium syringe-style fluid sampler for borehole applications\u0000that is tolerant of such high temperatures. Each of the 12 MTFS units\u0000collects a single 1 L sample at a predetermined temperature, which is\u0000defined by the trigger design and a shape memory alloy (SMA). SMAs have the\u0000innate ability to be deformed and only return to their initial shapes when\u0000their activation temperatures are reached, thereby triggering a sampler at a\u0000predetermined temperature. Three SMA-based trigger mechanisms, which do not\u0000rely on electronics, were tested. Triggers were released at temperatures\u0000spanning from 80 to 181  ∘ C. The MTFS was set for\u0000deployment on International Ocean Discovery Program Expedition 385T, but\u0000hole conditions precluded its use. The sampler is ready for use in deep\u0000oceanic or continental scientific boreholes with minimal training for\u0000operational success.","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"93 1","pages":"43-48"},"PeriodicalIF":1.2,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78660159","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":"Borehole research in New York State can advance utilization of low-enthalpy geothermal energy, management of potential risks, and understanding of deep sedimentary and crystalline geologic systems","authors":"T. Jordan, P. Fulton, J. Tester, D. Bruhn, H. Asanuma, U. Harms, Chaoyi Wang, D. Schmitt, P. Vardon, H. Hofmann, Tom Pasquini, Jared D. Smith","doi":"10.5194/sd-28-75-2020","DOIUrl":"https://doi.org/10.5194/sd-28-75-2020","url":null,"abstract":"Abstract. In January 2020, a scientific borehole planning workshop sponsored by the International Continental Scientific Drilling Program was convened at Cornell University in the northeastern United States. Cornell is planning to drill test wells to evaluate the potential to use geothermal heat from depths in the range of 2700–4500 m and rock temperatures of about 60 to 120  ∘ C to heat its campus buildings. Cornell encourages the Earth\u0000sciences community to envision how these boreholes can also be used to\u0000advance high-priority subsurface research questions. Because nearly all scientific boreholes on the continents are targeted to examine iconic\u0000situations, there are large gaps in understanding of the “average”\u0000intraplate continental crust. Hence, there is uncommon and widely applicable\u0000value to boring and investigating a “boring” location. The workshop\u0000focused on designing projects to investigate the coupled\u0000thermal–chemical–hydrological–mechanical workings of continental crust. Connecting the practical and scientific goals of the boreholes are a set of\u0000currently unanswered questions that have a common root: the complex\u0000relationships among pore pressure, stress, and strain in a heterogeneous and\u0000discontinuous rock mass across conditions spanning from natural to human perturbations and short to long timescales. The need for data and subsurface characterization vital for decision-making around the prospective\u0000Cornell geothermal system provides opportunities for experimentation,\u0000measurement, and sampling that might lead to major advances in the\u0000understanding of hydrogeology, intraplate seismicity, and fluid/chemical\u0000cycling. Subsurface samples could also enable regional geological studies\u0000and geobiology research. Following the workshop, the U.S. Department of\u0000Energy awarded funds for a first exploratory borehole, whose proposed design\u0000and research plan rely extensively on the ICDP workshop recommendations.","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"18 1","pages":"75-91"},"PeriodicalIF":1.2,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73907123","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":"ICDP workshop on the Lake Tanganyika Scientific Drilling Project: a late Miocene–present record of climate, rifting, and ecosystem evolution from the world's oldest tropical lake","authors":"J. Russell, P. Barker, A. Cohen, S. Ivory, I. Kimirei, C. Lane, M. Leng, N. Maganza, M. McGlue, E. Msaky, A. Noren, L. P. Park Boush, W. Salzburger, C. Scholz, R. Tiedemann, Shaidu Nuru","doi":"10.5194/sd-27-53-2020","DOIUrl":"https://doi.org/10.5194/sd-27-53-2020","url":null,"abstract":"Abstract. The Neogene and Quaternary are characterized by enormous changes in global\u0000climate and environments, including global cooling and the establishment of\u0000northern high-latitude glaciers. These changes reshaped global ecosystems,\u0000including the emergence of tropical dry forests and savannahs that are found\u0000in Africa today, which in turn may have influenced the evolution of humans\u0000and their ancestors. However, despite decades of research we lack long,\u0000continuous, well-resolved records of tropical climate, ecosystem changes,\u0000and surface processes necessary to understand their interactions and\u0000influences on evolutionary processes. Lake Tanganyika, Africa, contains the\u0000most continuous, long continental climate record from the mid-Miocene\u0000(∼10 Ma) to the present anywhere in the tropics and has long\u0000been recognized as a top-priority site for scientific drilling. The lake is\u0000surrounded by the Miombo woodlands, part of the largest dry tropical biome\u0000on Earth. Lake Tanganyika also harbors incredibly diverse endemic biota\u0000and an entirely unexplored deep microbial biosphere, and it provides textbook\u0000examples of rift segmentation, fault behavior, and associated surface\u0000processes. To evaluate the interdisciplinary scientific opportunities that\u0000an ICDP drilling program at Lake Tanganyika could offer, more than 70\u0000scientists representing 12 countries and a variety of scientific\u0000disciplines met in Dar es Salaam, Tanzania, in June 2019. The team\u0000developed key research objectives in basin evolution, source-to-sink\u0000sedimentology, organismal evolution, geomicrobiology, paleoclimatology,\u0000paleolimnology, terrestrial paleoecology, paleoanthropology, and\u0000geochronology to be addressed through scientific drilling on Lake\u0000Tanganyika. They also identified drilling targets and strategies, logistical\u0000challenges, and education and capacity building programs to be carried out\u0000through the project. Participants concluded that a drilling program at Lake\u0000Tanganyika would produce the first continuous Miocene–present record from\u0000the tropics, transforming our understanding of global environmental change,\u0000the environmental context of human origins in Africa, and providing a\u0000detailed window into the dynamics, tempo and mode of biological\u0000diversification and adaptive radiations.\u0000","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"90 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2020-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84552305","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":"High-resolution late Holocene sedimentary cores record the long history of the city of Cádiz (south-western Spain)","authors":"F. Salomon, D. Bernal-Casasola, J. J. Díaz, M. Lara, S. Domínguez-Bella, D. Ertlen, P. Wassmer, P. Adam, P. Schaeffer, L. Hardion, C. Vittori, S. Chapkanski, Hugo Delile, L. Schmitt, F. Preusser, M. Trautmann, A. Masi, C. Vignola, L. Sadori, Jacob Morales, P. Vidal Matutano, Vincent Robin, Benjamin Keller, Á. Sanchez Bellón, J. Martínez López, G. Rixhon","doi":"10.5194/sd-27-35-2020","DOIUrl":"https://doi.org/10.5194/sd-27-35-2020","url":null,"abstract":"Abstract. Today, coastal cities worldwide are facing major changes\u0000resulting from climate change and anthropogenic forcing, which requires\u0000adaptation and mitigation strategies to be established. In this context,\u0000sedimentological archives in many Mediterranean cities record a\u0000multi-millennial history of environmental dynamics and human adaptation,\u0000revealing a long-lasting resilience. Founded by the Phoenicians around 3000 years ago, Cádiz (south-western Spain) is a key example of a coastal\u0000resilient city. This urban centre is considered to be one of the first\u0000cities of western Europe and has experienced major natural hazards during its\u0000long history, such as coastal erosion, storms, and also tsunamis (like the\u0000one in 1755 CE following the destructive Lisbon earthquake). In the framework of an international, joint archaeological and\u0000geoarchaeological project, three cores have been drilled in a marine\u0000palaeochannel that ran through the ancient city of Cádiz. These\u0000cores reveal a ≥50 m thick Holocene sedimentary sequence. Importantly,\u0000most of the deposits date from the 1st millennium BCE to the 1st\u0000millennium CE. This exceptional sedimentary archive will allow our\u0000scientific team to achieve its research goals, which are (1) to reconstruct\u0000the palaeogeographical evolution of this specific coastal area; (2) to trace\u0000the intensity of activities of the city of Cádiz based on archaeological\u0000data, as well as geochemical and palaeoecological indicators; and (3) to\u0000identify and date high-energy event deposits such as storms and tsunamis.\u0000","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"36 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2020-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81411363","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}