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An Arctic expedition: a supposedly useful thing I’ll never do again 北极探险:一件据说有用的事,我再也不会做了
IF 1.9 4区 地球科学 Q2 Environmental Science Pub Date : 2023-06-05 DOI: 10.33265/polar.v42.9070
M. V. van Soest
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引用次数: 1
The Queen of the Arctic: Louise Arner Boyd 北极女王:路易斯·阿纳·博伊德
IF 1.9 4区 地球科学 Q2 Environmental Science Pub Date : 2023-05-19 DOI: 10.33265/polar.v42.9075
E. Isaksson, A. Ryall
Louise Boyd (1887–1972) was a female pioneer in Arctic research whose legacy includes the exploration of north-east Greenland. In this Perspective piece, we use a broad interdisciplinary approach to investigate her career as a photographer and expedition leader. When documenting glacial retreat during the 1930s, she was at the forefront of the development of glaciology as a research discipline. Without family obligations and with seemingly inexhaustible financial resources, she used Arctic exploration to create an independent and self-defined life for herself.
Louise Boyd(1887-1972)是北极研究的女性先驱,她的遗产包括对格陵兰东北部的探索。在这篇透视文章中,我们使用了广泛的跨学科方法来调查她作为摄影师和探险队队长的职业生涯。在记录20世纪30年代冰川退缩时,她处于冰川学作为一门研究学科发展的前沿。在没有家庭义务和看似取之不尽的经济资源的情况下,她利用北极探险为自己创造了独立和自我定义的生活。
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引用次数: 0
Review of Expedition relics from High Arctic Greenland—eight decades of exploration history told through 102 objects, by Peter R. Dawes (2023). Copenhagen: Museum Tusculanum Press. 500 pp. ISBN 987 87 635 46867. 彼得·道斯(Peter R.Dawes,2023)通过102个物体讲述了80年的探险历史。哥本哈根:塔斯库兰姆博物馆出版社。500页,ISBN 987 87 635 46867。
IF 1.9 4区 地球科学 Q2 Environmental Science Pub Date : 2023-05-17 DOI: 10.33265/polar.v42.9614
Per Kyrre Reymert
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引用次数: 0
Local temperature near native vascular plants in the Argentine Islands–Kyiv Peninsula region, Antarctic Peninsula: annual variability and approximation using standard meteorological measurements 阿根廷群岛-基辅半岛地区、南极半岛本地维管植物附近的局部温度:使用标准气象测量的年变化率和近似值
IF 1.9 4区 地球科学 Q2 Environmental Science Pub Date : 2023-05-12 DOI: 10.33265/polar.v42.8339
M. Savenets, L. Pysarenko, S. Krakovska, I. Parnikoza, D. Pishniak
We describe the main features of LT variability that influence native vascular plants in the Antarctic and examine the relationship between the temperature regime at the micro-level and meteorological conditions at the macro-level. We used a period of over a year, during which 37 specialized mini-loggers recorded LT near vascular plants in the Argentine Islands–Kyiv Peninsula region of the Antarctic Peninsula. Rather than measuring standard air or soil temperature, these loggers detect the temperature near the ground, in the microhabitats that harbour vascular plants. On a daily scale, LT correlates with standard (2-m) air temperature, with the values higher at rock slopes than at rock terraces and ledges. A moderate correlation was found with wind and radiation parameters. Seasonality accounted for 75–93% of total LT variability, with better results on open rock terraces compared to protected areas and clefts. LT day-to-day variability during the cold season is mostly responsible for differences in R2 of the annual cycle. We estimated daily mean LT using regression dependencies from 2-m air temperature and wind speed measured at a nearby meteorological station. R2 for these statistical models varies from 0.46 to 0.68. However, they underestimate the observed LT. LT measured on rock slopes showed better modelling results with air temperature, whereas wind speed was a better predictor on rock ledges. This study contributes to our understanding of the micro-scale temperature regime that influences native vascular plants and provides a method for its rough approximation using standard meteorological parameters.
我们描述了影响南极原生维管植物的LT变异的主要特征,并研究了微观层面的温度状况与宏观层面的气象条件之间的关系。我们使用了一年多的时间,在这段时间里,37名专业迷你记录器记录了南极半岛阿根廷群岛-基辅半岛地区维管植物附近的LT。这些记录器不是测量标准的空气或土壤温度,而是在地下附近的维管植物栖息地检测温度。在日常尺度上,LT与标准(2米)空气温度相关,岩石斜坡处的值高于岩石阶地和壁架处的值。风和辐射参数之间存在中度相关性。季节性占总LT变化的75-93%,与保护区和裂隙相比,开放岩石阶地的结果更好。低温在寒冷季节的日常变化是年周期R2差异的主要原因。我们使用附近气象站测得的2米气温和风速的回归相关性来估计日平均LT。这些统计模型的R2在0.46到0.68之间变化。然而,他们低估了观测到的LT。在岩石斜坡上测量的LT显示出更好的空气温度建模结果,而在岩石壁架上风速是更好的预测指标。这项研究有助于我们理解影响本地维管植物的微观尺度温度状况,并提供了一种使用标准气象参数对其进行粗略近似的方法。
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引用次数: 0
Carbon exchange and primary production in a High-Arctic peatland in Svalbard 斯瓦尔巴群岛北极高地泥炭地的碳交换和初级生产
IF 1.9 4区 地球科学 Q2 Environmental Science Pub Date : 2023-03-31 DOI: 10.33265/polar.v42.8541
T. Nakatsubo, M. Hirota, A. Kishimoto-Mo, N. Oura, M. Uchida
Moss tundra with a thick peat layer dominated by bryophytes is one of the most important ecosystems in the High Arctic of Svalbard, but little is known about the carbon dynamics of moss tundra. Here, we estimated the net primary production (NPP) and net ecosystem production (NEP) of moss tundra on Brøggerhalvøya (Brøgger Peninsula) of north-western Svalbard (79°N). The net photosynthetic and respiration rates of the two dominant moss species, Calliergon richardsonii and Tomenthypnum nitens, were measured under laboratory conditions. On the basis of the photosynthetic and respiration characteristics and climatic data, we estimated the cumulative NPP of the dominant moss species during the growing season to be 143–207 gC m-2. Net CO2 exchange, which was determined by subtracting the respiration of the brown moss layer from NPP, was similar to that estimated using field gas flux measurements. The field measurements indicated that methane emissions contributed little to carbon flow. The NEP estimated in this study was much larger than the long-term carbon accumulation rate reported in a previous study. These data suggest that a significant amount of fixed carbon was lost from the peat layer or that carbon accumulation has recently increased. The NPP and NEP values of the moss tundra are larger than those reported for other vegetation types in this area, suggesting that moss tundra is an active site with high rates of carbon fixation.
苔藓苔原覆盖着厚厚的泥炭层,以苔藓植物为主,是斯瓦尔巴群岛高北极地区最重要的生态系统之一,但人们对苔藓苔原的碳动力学知之甚少。在这里,我们估计了斯瓦尔巴群岛西北部(79°N)Brøggerhalvøya(Brögger半岛)苔藓苔原的净初级生产力(NPP)和净生态系统生产力(NEP)。在实验室条件下测定了两种优势苔藓物种——丽叶藻(Calliergon richardsonii)和新叶藻(Tomenthypnum nitens)的净光合速率和呼吸速率。根据光合和呼吸特征以及气候数据,我们估计优势苔藓物种在生长季节的累积NPP为143–207 gC m-2。通过从NPP中减去棕色苔藓层的呼吸作用来确定的净CO2交换与使用现场气体流量测量估计的结果相似。现场测量表明,甲烷排放对碳流量的贡献很小。这项研究中估计的NEP远大于先前研究中报告的长期碳积累率。这些数据表明,泥炭层损失了大量的固定碳,或者碳积累最近有所增加。苔藓苔原的NPP和NEP值大于该地区其他植被类型的报告值,表明苔藓苔原是一个具有高固碳率的活动场所。
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引用次数: 0
Perceptions of decision-makers about a potential forum of cooperation in the eastern part of the North American Arctic 决策者对北美北极东部潜在合作论坛的看法
IF 1.9 4区 地球科学 Q2 Environmental Science Pub Date : 2023-03-16 DOI: 10.33265/polar.v42.9026
Mathieu Landriault, Jean-François Savard, Anna Soer
Cooperation in the Arctic region has been fruitful in the past few decades, generating several multilateral organizations and forums covering the entire circumpolar North. In many cases, forums were created to serve as catalysts, bringing together decision-makers from different backgrounds in a conference setting to promote dialogue and the exchange of ideas. To enquire about the possibility of creating a forum of cooperation in the eastern North American Arctic, a total of five governmental officials from Canada, Denmark, Nunavut, Québec and Greenland, and one elected representative from Greenland were interviewed with the same set of five questions. The governmental officials were in senior positions at the main department focusing on foreign affairs in their respective jurisdictions. Most thought that a new forum of cooperation in the region would be highly desirable, on the grounds of shared interests, common identity and cultural affinities. Consensual positions were also found regarding the central role that civil society would play in a new cooperative venue and on sub-national governments assuming a leading role to spearhead the initiative. Following these interviews, it is difficult to pinpoint one government that could alone spearhead this new forum of cooperation. However, the governments of Nunavut and Greenland were the most enthusiastic about such a new regional forum. Given Greenland’s drive to complete independence, this type of forum could prove to be a statement of diplomatic motivation and ambition, tilting toward proto-diplomacy and an international policy that prepares the terrain for complete autonomy.
过去几十年,北极合作硕果累累,形成了多个覆盖整个北极地区的多边组织和论坛。在许多情况下,设立论坛是为了起到催化剂的作用,将来自不同背景的决策者聚集在一个会议环境中,以促进对话和交换意见。为了询问是否可能在北美东部北极地区建立一个合作论坛,来自加拿大、丹麦、努纳武特、quunavut和格陵兰的五名政府官员和来自格陵兰的一名当选代表接受了同样的五个问题的采访。这些政府官员都在各自管辖范围内负责外交事务的主要部门担任高级职务。大多数人认为,基于共同的利益、共同的特性和文化亲和力,在该地区建立一个新的合作论坛是非常可取的。会议还就民间社会在新的合作场所中发挥的核心作用以及地方政府在带头倡议方面发挥的主导作用达成了共识。在这些采访之后,很难确定哪一个政府能够独自领导这个新的合作论坛。然而,努纳武特和格陵兰政府对这样一个新的区域论坛最为热心。考虑到格陵兰完全独立的动力,这种类型的论坛可能被证明是外交动机和野心的声明,倾向于原型外交和国际政策,为完全自治做好准备。
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引用次数: 0
An observation of white whale (Delphinapterus leucas) mating behaviour in the wild 野生白鲸(Delphinapterus leucas)交配行为的观察
IF 1.9 4区 地球科学 Q2 Environmental Science Pub Date : 2023-03-08 DOI: 10.33265/polar.v42.8875
C. Lydersen, Kerstin C Langenberger, K. Kovacs
Herein we describe mating behaviour observed in a group of 20 white whales in Svalbard, Norway. A single female was the centre of attention during the 45-minute encounter, which was observed, photographed and videotaped at an ice edge in Storfjorden in June 2022. Several males surrounded the female and vigorously herded her from all sides. The female spy-hopped regularly, and sometimes her whole body was pushed out of the water by the other animals. High tail-lifts and tail-slapping were frequently performed by males, and erect penises were observed many times. Trumpet calls were also heard. At one point, three males with erect penises pressed themselves against the female simultaneously. The female was bleeding from wounds on her head and neck that were seemingly inflicted by bites from the other whales. She was also bleeding from her genital slit. A single copulation was seen at the surface, but it is likely that multiple males mated successfully with the female during the encounter. The event was more boisterous and violent than what has been described in captive white whales. We cannot assess how representative this observation is of typical reproductive behaviour for the species. But the encounter was remarkably similar to what has been described for several species of bottlenose dolphins that have male alliances that consort with individual females, restricting the female’s escape and keeping her accessible to mating only by members of the group.
在此,我们描述了在挪威斯瓦尔巴群岛观察到的20头白鲸的交配行为。在这场45分钟的遭遇战中,一只雌性成为了人们关注的焦点,这场遭遇战于2022年6月在Storfjorden的冰缘被观察、拍摄和录像。几只雄性包围了雌性,并从四面八方大力驱赶它。这名女间谍经常跳跃,有时她的整个身体都被其他动物推出水面。雄性经常进行高尾巴抬起和拍打尾巴的行为,并多次观察到勃起的阴茎。还听到了号角声。有一次,三只阴茎勃起的雄性同时将自己压在雌性身上。这只雌性鲸鱼头部和颈部的伤口正在流血,这些伤口似乎是被其他鲸鱼咬伤造成的。她的生殖器也在流血。在水面上看到了一次交配,但很可能在相遇过程中有多只雄性与雌性成功交配。这一事件比圈养白鲸所描述的更加喧闹和暴力。我们无法评估这一观察结果对该物种典型繁殖行为的代表性。但这次遭遇与几种宽吻海豚的遭遇非常相似,它们有雄性联盟,与个别雌性交配,限制了雌性的逃跑,并使其只能由群体成员交配。
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引用次数: 0
Adult survival and annual movement patterns of common snipe in Iceland 冰岛普通鹬的成年生存和年度活动模式
IF 1.9 4区 地球科学 Q2 Environmental Science Pub Date : 2023-03-07 DOI: 10.33265/polar.v42.8616
A. Petersen, Sverrir Thorstensen, I. K. Petersen, Scott W. Petrek, Kane Brides, Anna M. Calvert, M. Mallory, G. Robertson, S. Gutowsky
The common snipe (Gallinago gallinago) is a wader that breeds in subarctic regions from Iceland to Russia, and for which global populations are in decline. We studied snipe breeding in western Iceland between 1998 and 2020, locating nests and ringing birds annually. In 2019 and 2020, we deployed geolocators on nesting adults to estimate the timing of their annual migration and the location of overwintering areas. Birds moved principally between breeding locations in Iceland to wintering areas in Ireland, although some birds may winter farther north. We also found that apparent annual adult survival averaged 66%, but was higher in years with warmer, wetter winters. Given the similarity of our survival estimates to those from snipe elsewhere, we suggest that adult survival is unlikely a major contributor to declining populations, and other factors like habitat loss may be of more concern.
鹬(Gallinago Gallinago)是一种涉禽,在从冰岛到俄罗斯的亚北极地区繁殖,其全球数量正在下降。我们在1998年至2020年期间研究了冰岛西部的鹬类繁殖,每年定位鸟巢和鸣鸟。在2019年和2020年,我们在筑巢的成年鸟上部署了地理定位器,以估计它们每年迁徙的时间和越冬地区的位置。鸟类主要在冰岛的繁殖地和爱尔兰的越冬区之间迁徙,尽管有些鸟类可能会向北越冬。我们还发现,年成虫的平均表观存活率为66%,但在冬季温暖潮湿的年份存活率更高。鉴于我们的生存估计与其他地方的鹬类相似,我们认为成年鹬的生存不太可能是导致种群数量下降的主要因素,而栖息地丧失等其他因素可能更值得关注。
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引用次数: 0
A comparison of an operational wave–ice model product and drifting wave buoy observation in the central Arctic Ocean: investigating the effect of sea-ice forcing in thin ice cover 北冰洋中部波浪-冰模型产品和漂移波浪浮标观测结果的比较:研究薄冰盖中海冰强迫的影响
IF 1.9 4区 地球科学 Q2 Environmental Science Pub Date : 2023-02-02 DOI: 10.33265/polar.v42.8874
T. Nose, J. Rabault, T. Waseda, T. Kodaira, Yasushi Fujiwara, Tomotaka Katsuno, N. Kanna, K. Tateyama, J. Voermans, Tatiana Aleekseva
A prototype OpenMetBuoy (OMB) was deployed alongside a commercial buoy in the central Arctic Ocean, north of the Laptev Sea, where there are historically no wave observations available. The inter-buoy comparison showed that the OMB measured wave heights and periods accurately, so the buoy data were used to study the predictability of a wave–ice model. The first event we studied was when both buoys observed a sudden decrease in significant wave heights Hm0, which was caused by the change of wind directions from along the ice edge to off-ice wind. The Arctic Ocean Wave Analysis and Forecast wave–ice model product (ARC MFC) underestimated the Hm0 on the account of the fetch being constrained by the inaccurate model representation of an ice tongue. The second case was an on-ice wave event as new ice formed. In this instance, the ARC MFC wave–ice model product largely underestimated the downwind buoy Hm0. Model sea-ice conditions were examined by comparing the ARC MFC sea-ice forcing with the neXtSIM sea-ice model product, and our analysis revealed the ARC MFC did not resolve thin ice thickness distribution for ice types like young and grey ice, typically less than 30 cm. The ARC MFC model’s wave dissipation rate has a sea-ice thickness dependence and overestimated wave dissipation in thin ice cover; sea-ice forcing that can resolve the thin thickness distribution is needed to improve the predictability. This study provides an observational insight into better predictions of waves in marginal ice zones when new ice forms.
OpenMetBuoy的原型(OMB)被部署在北冰洋中部拉普捷夫海以北的商业浮标旁边,该地区历史上没有海浪观测数据。浮标间对比结果表明,OMB准确地测量了波浪高和周期,因此可以利用浮标数据研究波浪冰模型的可预测性。我们研究的第一个事件是两个浮标都观察到显著波高Hm0突然下降,这是由于风向从沿冰边缘转变为冰外风造成的。北冰洋波浪分析与预报波冰模式产品(ARC MFC)由于模型对冰舌的不准确表示而低估了Hm0。第二种情况是新冰形成时的冰上波事件。在这种情况下,ARC MFC波冰模型产品在很大程度上低估了顺风浮标Hm0。通过将ARC MFC海冰强迫与neXtSIM海冰模式产品进行比较,对模型海冰条件进行了检验,我们的分析表明,ARC MFC不能解决年轻冰和灰冰等冰类型(通常小于30 cm)的薄冰厚度分布问题。ARC MFC模型计算的波浪耗散率与海冰厚度有关,且高估了薄冰层下的波浪耗散;为了提高可预见性,需要海冰强迫来解析薄厚度分布。这项研究为更好地预测新冰形成时边缘冰带的波浪提供了观测见解。
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引用次数: 4
Personal submersibles offer novel ecological research access to Antarctic waters: an example, with observations of the rarely encountered scyphozoan Stygiomedusa gigantea 个人潜水器为南极水域的生态研究提供了新的途径:例如,观察很少遇到的棘足动物巨蜥
IF 1.9 4区 地球科学 Q2 Environmental Science Pub Date : 2023-01-30 DOI: 10.33265/polar.v42.8873
D. Moore, A. Flink, Eva Prendergast, Antony Gilbert
Underwater biological surveys have been conducted around the Antarctic continent for several decades, and our knowledge of the species present in the shallow waters (<50 m) is reasonably comprehensive. However, the waters below 50 m remain underexplored on the account of difficulty of access, financial barriers and relatively few operational platforms capable of deployment to such depths. Here, we demonstrate that personal submersibles, now increasingly deployed by the expedition cruise industry, can be vessels of opportunity for biological research in the polar regions. We describe direct observations of the rarely encountered scyphozoan Stygiomedusa gigantea at water depths of 80–280 m in Antarctic Peninsula coastal waters as an example of the potential that personal submersibles present for the scientific community, and we outline possible research avenues for utilizing these platforms in the future.
在南极大陆周围进行了几十年的水下生物调查,我们对浅水(<50米)中存在的物种的了解相当全面。然而,由于进入困难、资金障碍以及能够部署到这种深度的操作平台相对较少,50米以下的水域仍未得到充分开发。在这里,我们证明了个人潜水器,现在越来越多地部署在探险邮轮行业,可以为极地地区的生物研究提供机会。我们描述了在南极半岛沿海水域80-280米深的水域中很少遇到的棘足动物Stygiomedusa gigantea的直接观察结果,作为个人潜水器为科学界提供潜力的一个例子,我们概述了未来利用这些平台的可能研究途径。
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引用次数: 0
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Polar Research
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