Annals of Glaciology最新文献_第10页

Ice drilling on Skytrain Ice Rise and Sherman Island, Antarctica 南极Skytrain冰隆和谢尔曼岛上的冰钻探

IF 2.9 4区地球科学

Annals of Glaciology Pub Date : 2021-05-21 DOI: 10.1017/aog.2021.7

R. Mulvaney, Julius Rix, S. Polfrey, M. Grieman, C. Martín, Christoph Nehrbass-Ahles, Isobel F. Rowell, R. Tuckwell, E. Wolff

引用次数: 13

Recoverable Autonomous Sonde for subglacial lakes exploration: heating control system design 用于冰下湖泊探测的可回收自主声纳：加热控制系统设计

IF 2.9 4区地球科学

Annals of Glaciology Pub Date : 2021-04-29 DOI: 10.1017/aog.2021.5

Haibin Yu, Tianxing Zhu, Xiao Jiang, Yongzhen Tang, Xiaodong Li, Chong Li, Shengmiao Huang, Jianguang Shi, Youhong Sun, P. Talalay, Xiaopeng Fan, Xiao Li, Yazhou Li, Shi-lin Peng

{"title":"Recoverable Autonomous Sonde for subglacial lakes exploration: heating control system design","authors":"Haibin Yu, Tianxing Zhu, Xiao Jiang, Yongzhen Tang, Xiaodong Li, Chong Li, Shengmiao Huang, Jianguang Shi, Youhong Sun, P. Talalay, Xiaopeng Fan, Xiao Li, Yazhou Li, Shi-lin Peng","doi":"10.1017/aog.2021.5","DOIUrl":"https://doi.org/10.1017/aog.2021.5","url":null,"abstract":"Abstract Drilling and sampling are the most direct and effective methods available to study Antarctic subglacial lakes. Based on the Philberth probe, a Recoverable Autonomous Sonde (RECAS) allows for in situ lake water measurement and sampling, through the addition of an upper thermal tip and a cable recoiling mechanism. RECAS-200, a prototype of RECAS, has a drilling depth of 200 m, a surface supply voltage of 800 VAC and a downhole power of ~9.6 kW during drilling. In this study, a heating control system for RECAS-200 was designed. The system avoids the need for high-power step-down converters, by separating heating power from control power, thereby reducing the overall weight of the probe and avoiding the need to increase cable diameter. We also introduce a self-developed, small, solid-state, 800 VAC power regulator and a fuzzy PID temperature control algorithm. Their purpose was to manage the power adjustment of each heating element and to provide closed-loop temperature control of certain heating elements which can easily burn out due to overheating. Test results indicated that the proposed RECAS-200 heating control system met all our design specifications and could be easily assembled into the RECAS-200 probe.","PeriodicalId":8211,"journal":{"name":"Annals of Glaciology","volume":"62 1","pages":"280 - 292"},"PeriodicalIF":2.9,"publicationDate":"2021-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/aog.2021.5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45804266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Drilling the new 5G-5 branch hole at Vostok Station for collecting a replicate core of old meteoric ice 在沃斯托克站钻探新的5G-5分支孔，以收集旧流星冰的复制核心

IF 2.9 4区地球科学

Annals of Glaciology Pub Date : 2021-04-21 DOI: 10.1017/aog.2021.4

Aleksei V. Turkeev, N. I. Vasilev, V. Lipenkov, A. Bolshunov, A. Ekaykin, A. Dmitriev, Dmitrii A. Vasilev

引用次数: 3

Deep ice-core drilling to 800 m at Dome A in East Antarctica 在东南极洲Dome A进行深度800米的冰芯钻探

IF 2.9 4区地球科学

Annals of Glaciology Pub Date : 2021-04-05 DOI: 10.1017/aog.2021.2

Zhengyi Hu, G. Shi, P. Talalay, Yuansheng Li, Xiaopeng Fan, C. An, Nan Zhang, Chuanjin Li, Ke Liu, Jinhai Yu, Cheng Yang, B. Li, Bowen Liu, T. Ma

引用次数: 4

AOG volume 62 issue 84 Cover and Front matter AOG第62卷第84期封面和封面问题

IF 2.9 4区地球科学

Annals of Glaciology Pub Date : 2021-04-01 DOI: 10.1017/aog.2021.11

H. Jiskoot, D. Dahl-Jensen, Nicolas Eckert, F. Pattyn, R. Greve, T. Popp, S. B. Hansen, P. Talalay, O. Alemany, K. Kawamura, Keith Makinson, H. Motoyama, K. Nielsen, J. Schwander, Kristina R. Slawny, F. Wilhelms, G. Flowers, C. Hulbe, J. Stroeve, A. Leeson

引用次数: 0

AOG volume 62 issue 84 Cover and Back matter AOG第62卷第84期封面和封底

IF 2.9 4区地球科学

Annals of Glaciology Pub Date : 2021-04-01 DOI: 10.1017/aog.2021.12

引用次数: 0

Recoverable autonomous sonde for subglacial lake exploration: electronic control system design 用于冰下湖泊探测的可回收自主探测器：电子控制系统设计

IF 2.9 4区地球科学

Annals of Glaciology Pub Date : 2021-03-18 DOI: 10.1017/aog.2021.1

Shi-lin Peng, Xiao Jiang, Yong Tang, Chong Li, Xiaodong Li, Shengmiao Huang, Tianxing Zhu, Jianguang Shi, Youhong Sun, P. Talalay, Xiaopeng Fan, Nan Zhang, B. Li, D. Gong, Haibin Yu

{"title":"Recoverable autonomous sonde for subglacial lake exploration: electronic control system design","authors":"Shi-lin Peng, Xiao Jiang, Yong Tang, Chong Li, Xiaodong Li, Shengmiao Huang, Tianxing Zhu, Jianguang Shi, Youhong Sun, P. Talalay, Xiaopeng Fan, Nan Zhang, B. Li, D. Gong, Haibin Yu","doi":"10.1017/aog.2021.1","DOIUrl":"https://doi.org/10.1017/aog.2021.1","url":null,"abstract":"Abstract Subglacial lake exploration is of great interest to the science community. RECoverable Autonomous Sonde (RECAS) provides an exploration tool to measure and sample subglacial lake environments while the subglacial lake remains isolated from the glacier surface and atmosphere. This paper presents an electronic control system design of 200 m prototype of RECAS. The proposed electronic control system consists of a surface system, a downhole control system, and a power transfer and communication system. The downhole control system is the core element of RECAS, and is responsible for sonde status monitoring, sonde motion control, subglacial water sampling and in situ analysis. A custom RS485 temperature sensor was developed to cater for the limited size and depth requirements of the system. We adopted a humidity-based measurement to monitor for a housing leak. This condition is because standard leak detection monitoring of water conductivity may be inapplicable to pure ice in Antarctica. A water sampler control board was designed to control the samplers and monitor the on/off state. A high-definition camera system with built-in storage and self-heating ability was designed to perform the video recording in the subglacial lake. The proposed electronic control system is proven effective after a series of tests.","PeriodicalId":8211,"journal":{"name":"Annals of Glaciology","volume":"62 1","pages":"263 - 279"},"PeriodicalIF":2.9,"publicationDate":"2021-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/aog.2021.1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43841380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Development of a clean hot water drill to access Subglacial Lake CECs, West Antarctica 开发一种清洁热水钻机，以进入南极洲西部的冰下CECs湖

IF 2.9 4区地球科学

Annals of Glaciology Pub Date : 2021-01-25 DOI: 10.1017/aog.2020.88

Keith Makinson, P. Anker, J. Garcés, D. J. Goodger, S. Polfrey, Julius Rix, Alejandro Silva, A. Smith, J. Uribe, R. Zamora

{"title":"Development of a clean hot water drill to access Subglacial Lake CECs, West Antarctica","authors":"Keith Makinson, P. Anker, J. Garcés, D. J. Goodger, S. Polfrey, Julius Rix, Alejandro Silva, A. Smith, J. Uribe, R. Zamora","doi":"10.1017/aog.2020.88","DOIUrl":"https://doi.org/10.1017/aog.2020.88","url":null,"abstract":"Abstract Recent drilling successes on Rutford Ice Stream in West Antarctica demonstrate the viability of hot water drilling subglacial access holes to depths >2000 m. Having techniques to access deep subglacial environments reliably paves the way for subglacial lake exploration beneath the thick central West Antarctic Ice Sheet. An ideal candidate lake, overlain by ~2650 m of ice, identified by Centro de Estudios Científicos (CECs), Chile, has led to collaboration with British Antarctic Survey to access Subglacial Lake CECs (SLCECs). To conform with the Scientific Committee on Antarctic Research code of conduct, which provides a guide to responsible scientific exploration and stewardship of these pristine systems, any access drilling must minimise all aspects of contamination and disturbance of the subglacial environment. To meet these challenges, along with thicker ice and 2000 m elevation, pumping and water treatment systems developed for the Subglacial Lake Ellsworth project, together with new diesel generators, additional water heating and longer drill hose, are currently being integrated with the BEAMISH hot water drill. A dedicated test season near SLCECs will commission the new clean hot water drill, with testing and validation of all clean operating procedures. A subsequent season will then access SLCECs cleanly.","PeriodicalId":8211,"journal":{"name":"Annals of Glaciology","volume":"62 1","pages":"250 - 262"},"PeriodicalIF":2.9,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/aog.2020.88","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41563107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Non-contact measurement system for hot water drilled ice boreholes 热水钻孔冰孔非接触式测量系统

IF 2.9 4区地球科学

Annals of Glaciology Pub Date : 2021-01-21 DOI: 10.1017/aog.2020.85

Carson W. I. McAfee, Julius Rix, S. Quirk, P. Anker, A. Brisbourne, Keith Makinson

{"title":"Non-contact measurement system for hot water drilled ice boreholes","authors":"Carson W. I. McAfee, Julius Rix, S. Quirk, P. Anker, A. Brisbourne, Keith Makinson","doi":"10.1017/aog.2020.85","DOIUrl":"https://doi.org/10.1017/aog.2020.85","url":null,"abstract":"Abstract A programmable borehole measurement system was deployed in hot water drilled ice holes during the ‘Bed Access and Monitoring of Ice Sheet History’ (BEAMISH) project to drill to the bed of the Rutford Ice Stream in West Antarctica. This system operates autonomously (no live data) after deployment, and records borehole diameter (non-contact measurement), water column pressure, heading and inclination. Three cameras, two sideways looking and one vertical, are also included for visual inspection of hole integrity and sediments. The system is small, lightweight (~35.5 kg) and low power using only 6 ‘D’ cell sized lithium batteries, making it ideal for transport and use in remote field sites. The system is 2.81 m long and 165 mm in diameter, and can be deployed attached to the drill hose for measurements during drilling or on its own deployment line afterwards. The full system is discussed in detail, highlighting design strengths and weaknesses. Data from the BEAMISH project are also presented in the form of camera images showing hole integrity, and sensor data used to calculate borehole diameter through the full length of the hole. These data are used to show confidence in hole verticality and subsurface cavity development and connection.","PeriodicalId":8211,"journal":{"name":"Annals of Glaciology","volume":"62 1","pages":"223 - 232"},"PeriodicalIF":2.9,"publicationDate":"2021-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/aog.2020.85","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47140393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Shallow hot-point drill system for active layer temperature measurement along Zhongshan–Dome A traverse, Antarctica 南极中山-穹顶A导线活动层温度测量浅层热点钻探系统

IF 2.9 4区地球科学

Annals of Glaciology Pub Date : 2021-01-18 DOI: 10.1017/aog.2020.87

Yazhou Li, Xiaopeng Fan, P. Talalay, Yinke Dou, Siyu Lu, Shi-chang Kang, Xiao Li, Jialin Hong

{"title":"Shallow hot-point drill system for active layer temperature measurement along Zhongshan–Dome A traverse, Antarctica","authors":"Yazhou Li, Xiaopeng Fan, P. Talalay, Yinke Dou, Siyu Lu, Shi-chang Kang, Xiao Li, Jialin Hong","doi":"10.1017/aog.2020.87","DOIUrl":"https://doi.org/10.1017/aog.2020.87","url":null,"abstract":"Abstract In glaciology, snow–firn temperature at 10 m is considered a representation of the mean annual air temperature at the surface (MAAT) of the studied site. Although MAAT is an important parameter in ice-sheet investigations, it has not been widely measured in Antarctica. To measure the 10 m snow–firn temperature in Antarctica, a shallow hot-point drill system is designed. In this simple and lightweight system, a hot-point drill can melt boreholes with a diameter of 34 mm in the snow–firn to a depth of 30 m and a temperature sensors string can measure the borehole temperature precisely. In the 2018/19 field season, 16 boreholes along the Zhongshan–Dome A traverse were drilled, and the borehole temperature was measured. Although certain problems existed pertaining to the hot-point drill, a total depth of ~244 m was successfully drilled at an average penetration rate of ~10 m h−1. After borehole drilling, ~12–15 h were generally required for the borehole to achieve thermal equilibrium with the surroundings. Preliminary results demonstrated that the 10 m snow–firn temperature along the traverse route was affected by the increasing altitude and latitude, and it decreased gradually with an increase in the distance from Zhongshan station.","PeriodicalId":8211,"journal":{"name":"Annals of Glaciology","volume":"62 1","pages":"157 - 165"},"PeriodicalIF":2.9,"publicationDate":"2021-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/aog.2020.87","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49230782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2