bluuebunny/crossref_metadata_2025_split huggingface dataset:
Producing and communicating natural history in the long 18th century: Moravian observations concerning Greenland’s climate in unpublished sources
Authors: Borm Jan , Kodzik Joanna , Charbit Sylvie 
Published: June 2021

Abstract
This paper discusses weather observations of Moravian missionaries in Greenland in the long 18th century, placing them in the broader context of their missionary work at Neu-Herrnhut and other stations as well as their comments on the natural world. Some of their climate-related remarks and measurements were published and discussed in print, notably in David Cranz’ History of Greenland and a number of scholarly reviews at the time. These publications are compared to and complemented by data retrieved by the authors from unpublished source material in the Moravian Archives in Herrnhut, Germany, demonstrating that the Moravian diaries can fill in significant gaps in Greenland’s weather charts before systematic measurements were introduced in the 19th century. Their special interest for climate studies is underscored in conclusion, in particular their observations of extreme climate events that can allow us to better characterise the amplitude and geographical extent of such events and to compare them with climate model simulations in order to better understand the respective roles of external (volcanism, solar activity) and internal (atmospheric circulation) forcings and the impacts of potential feedbacks within the ocean–atmosphere system.
“Liberating the Small Devils”: Red Guard Newspapers and Radical Publics, 1966–1968
Authors: Volland Nicolai 
Published: June 2021

AbstractRed Guard newspapers and pamphlets (wenge xiaobao) were a key source for early research on the Cultural Revolution, but they have rarely been analysed in their own right. How did these publications regard their status and function within the larger information ecosystem of the People's Republic, and what is their role in the history of the modern Chinese public sphere? This article focuses on a particular subset of Red Guard papers, namely those published by radical groups within the PRC's press and publication system. These newspapers critiqued the pre-Cultural Revolution press and reflected upon the possible futures of a new, revolutionary Chinese press. Short-lived as these experiments were, they constitute a test case to re-examine the functioning of the public in a decidedly “uncivil” polity. Ultimately, they point to the ambiguous potential of the public for both consensus and conflict, liberation and repression, which characterizes the press in 20th-century China.
Teaching Theory and Space: Human Territoriality in Political Science
Authors: Tagma Halit Mustafa E. 
Published: June 2021

ABSTRACTLearning theories in political science can be difficult for students. This article describes a technique that helps students to understand how a theory about human characteristics may impact behavior. I use a mini-simulation in which two volunteers are asked to enact a gimmick in front of the classroom, demonstrating the theory of human territoriality (Asal et al. 2018). As the volunteers engage in small talk, I point out that they engage with one another at a certain distance and angle that reflects social space. As the exercise progresses, students easily relate to the theory of human territoriality, which is defined as the symbolic and physical connection to a space considered as their own. This mini-simulation achieves the following learning objectives: understanding (1) that theories are relevant and help to explain human behavior; (2) the workings of the individual level of analysis; and (3) that theories are not universal and have limits to their application across culture, time, and space. This teaching technique does not require preparation time or resources, and students easily comprehend the expected learning outcomes. Having received overwhelmingly positive feedback in evaluations, I offer this as a viable technique for teaching theory in general because it helps students to comprehend what a theory is supposed to do—that is, to understand, explain, and sometimes predict behavior.
BIALL Covid-19 Industry Survey 2020: an Introduction
Authors: Brown Karen 
Published: June 2021

AbstractThe British and Irish Association of Law Librarians (BIALL) carried out a survey of BIALL members during May 2020 in order to gain a view, at a point in time, of the impact of Covid-19.1 National lockdowns in both the United Kingdom and Ireland had come into force in March 2020. The survey was a way of gauging how the legal information community was responding to the challenges and changing circumstances brought about as a result of the pandemic. This brief introduction by Karen Brown, President of BIALL, sets the scene for the results of the survey which appear in the pages that follow.2
“The surprise questions” using variable time frames in hospitalized patients with advanced cancer
Authors: Kim Sun Hyun , Suh Sang-Yeon , Yoon Seok Joon , Park Jeanno , Kim Yu Jung , Kang Beodeul , Park Youngmin , Kwon Jung Hye , Park Kwonoh , Kim Jung-Young , Choi Hana , Ahn Hong-Yup , Hamano Jun , Hui David 
Published: June 2021

AbstractObjectiveSeveral studies supported the usefulness of “the surprise question” in terms of 1-year mortality of patients. “The surprise question” requires a “Yes” or “No” answer to the question “Would I be surprised if this patient died in [specific time frame].” However, the 1-year time frame is often too long for advanced cancer patients seen by palliative care personnel. “The surprise question” with shorter time frames is needed for decision making. We examined the accuracy of “the surprise question” for 7-day, 21-day, and 42-day survival in hospitalized patients admitted to palliative care units (PCUs).MethodThis was a prospective multicenter cohort study of 130 adult patients with advanced cancer admitted to 7 hospital-based PCUs in South Korea. The accuracy of “the surprise question” was compared with that of the temporal question for clinician's prediction of survival.ResultsWe analyzed 130 inpatients who died in PCUs during the study period. The median survival was 21.0 days. The sensitivity, specificity, and overall accuracy for the 7-day “the surprise question” were 46.7, 88.7, and 83.9%, respectively. The sensitivity, specificity, and overall accuracy for the 7-day temporal question were 6.7, 98.3, and 87.7%, respectively. The c-indices of the 7-day “the surprise question” and 7-day temporal question were 0.662 (95% CI: 0.539–0.785) and 0.521 (95% CI: 0.464–0.579), respectively. The c-indices of the 42-day “the surprise question” and 42-day temporal question were 0.554 (95% CI: 0.509–0.599) and 0.616 (95% CI: 0.569–0.663), respectively.Significance of resultsSurprisingly, “the surprise questions” and temporal questions had similar accuracies. The high specificities for the 7-day “the surprise question” and 7- and 21-day temporal question suggest they may be useful to rule in death if positive.
Terminating Twins: Survival of One/Twin Research Reviews: Twin Discordance for Primordial Dwarfism; Twin Study of Public Service Motivation; Four-Parameter Model for Twin Research; Global Twinning at a Peak; Germline Differences of Monozygotic Twins/In the News: Twins and Dyngus Day; Triplets Born in Austrian Displaced Persons’ Camp; Superior, Film About Estranged Identical Twin Sisters; Adopting Own Twins After Surrogacy; Twins and Primordial Dwarfism Revisited
Authors: Segal Nancy L. 
Published: June 2021

AbstractSelective termination is the term used for the elimination of an abnormal fetus. In contrast, multifetal pregnancy reduction refers to the termination of one or more members of a twin or higher-order multiple birth set, respectively, to reduce the high risks associated with these pregnancies. The procedure can also be used when a serious physical condition is detected prenatally in a member of a multiple birth set. In a minority of cases, selective termination has reduced two healthy fetuses to one when parents wanted just one additional child in the family. In the present article, the perspectives of a surviving twin whose family wished to terminate both healthy fetuses are examined. Next, past and present twin studies of primordial dwarfism, public service motivation, an analytical model, the global twinning rate and germline differences are summarized. The article concludes with a synopsis of twin-related news that covers twins and Dyngus Day, triplets born in an Austrian displaced persons’ camp, the film Superior — about estranged identical twin sisters, a couple adopting their own twins after surrogacy and a new case of twins and primordial dwarfism, a condition introduced in the research reviews.
Anthropogenic and Climatic Contributions to Observed Carbon System Trends in the Northeast Pacific
Authors: Franco Ana C. , Ianson Debby , Ross Tetjana , Hamme Roberta C. , Monahan Adam H. , Christian James R. , Davelaar Marty , Johnson William K. , Miller Lisa A. , Robert Marie , Tortell Philippe D. 
Published: June 2021

AbstractThe ocean absorbs anthropogenic carbon, slowing atmospheric CO2 increase but driving ocean acidification. Long‐term changes in the carbon system are typically assessed from single‐point time series or from hydrographic sections spaced by decades. Using higher resolution observations (1–3 year−1) from the Line P time series, we investigate processes modulating trends in the carbon system of the northeast subarctic Pacific. Dissolved inorganic carbon (DIC) and apparent oxygen utilization (AOU) from 1990 to 2019 reveal substantial trends over most of the upper water column along the 1,500 km coastal to open ocean transect. At the surface, an increasing trend in salinity‐normalized DIC (sDIC33) (+0.5 ± 0.4 μmol kg−1 yr−1) is associated with a decrease in pH (0.01–0.02 decade−1) and a decrease in aragonite saturation state (0.04–0.08 decade−1). These observed trends are driven by anthropogenic CO2 uptake, partially offset by trends in surface salinity or temperature. Stratification associated with recent marine heat waves appears to have caused anomalously low surface pCO2. sDIC33 trends of similar magnitude were found below the seasonal thermocline on the 26.7–26.8 isopycnals (150–300 m), which are ventilated in the western Pacific. Roughly, a third (20%–50%) of the subsurface sDIC33 trend is driven by increased remineralization, likely caused by long‐term decreases in ventilation in the western Pacific. Bidecadal oscillations in the ventilation of the 26.7–26.8 isopycnals arising from the Lunar Nodal Cycle cause oscillations in sDIC33 and AOU at the offshore end of our transect. We trace the oscillations to alternating periods of higher anthropogenic carbon uptake or higher carbon remineralization.
Postseismic Deformation and Afterslip Evolution of the 2015 Gorkha Earthquake Constrained by InSAR and GPS Observations
Authors: Hong Shunying , Liu Mian 
Published: June 2021

AbstractIn the past few years, space‐geodesy has measured continued postseismic deformation in the region of the 2015 Gorkha Mw 7.8 earthquake. Previous studies have suggested that the postseismic deformation is dominated by afterslip, but the spatiotemporal evolution of the afterslip, hence its cause and impact on regional seismicity are disputed, and contribution from other postseismic processes has not been well constrained. Here, we constructed an afterslip model using InSAR and GPS observations over three years after the Gorkha earthquake. First, the Sentinel‐1A satellite data were processed using Permanent Scatterer Interferometric Synthetic Aperture Radar method to extract deformational signals at high‐coherence points, and a fitting method was used to extract the postseismic displacement sequences. We then used InSAR and GPS data in a joint inversion for the evolution of afterslip, and compared its contribution to the observed postseismic displacement to that of viscoelastic relaxation and poroelastic rebound. Our results confirm that afterslip has dominated the observed postseismic deformation in the Gorkha region. Within 3 years of the Gorkha earthquake, afterslip released ∼1.20 × 1020 N m, about 14% of that released by the mainshock and the largest aftershock, or equivalent to an Mw 7.32 earthquake. The afterslip has occurred mostly downdip of the coseismic slip zone, in the ductile shear zone, apparently controlled by rheological properties. The updip shallow portion of the Main Frontal Thrust (MFT) zone has not been ruptured by coseismic slip or unlocked by afterslip, thus could potentially produce future earthquakes.
Geodetic Coupling Models as Constraints on Stochastic Earthquake Ruptures: An Example Application to PTHA in Cascadia
Authors: Small David T. , Melgar Diego 
Published: June 2021

AbstractCurrent stochastic rupture modeling techniques do not consider the potential influence of inter‐seismic coupling, a first‐order property of a megathrust, which can show correlation between areas of high coupling and areas of greater slip as seen in recent large ruptures globally. Therefore, it is reasonable to assume that it should be considered as prior information in rupture modeling. Here, we first present a mathematical formalism to introduce coupling models as prior information into stochastic rupture modeling. We then focus on how introducing slip deficit information into the stochastic rupture models influences slip distributions for the Cascadia subduction zone (CSZ). We compare rupture models created with two end member models of coupling, one with a shallow coupling and another with coupling deeper downdip. We also discuss the comparison to models created without assuming knowledge of the coupling distribution except for variation in the downdip limit of slip. Variations occur and correlate well with areas with the largest differences in slip deficit rates. The ruptures are then used for regional probabilistic tsunami hazard assessment. Overall, the tsunami amplitudes generated are much more hazardous in the northern extent of the CSZ where differences in coupling distribution are more prevalent. Models obtained from assuming a shallower downdip limit have tsunami amplitudes more similar to those from the geodetic coupling models. Although uncertainties are present in the accuracy of coupling, imposing either constraint created different hazard estimations when compared to those where no prior coupling information was used.
Superimposed Rifting at the Junction of the Central and Equatorial Atlantic: Formation of the Passive Margin of the Guiana Shield
Authors: Loparev Artiom , Rouby Delphine , Chardon Dominique , Dall’Asta Massimo , Sapin François , Bajolet Flora , Ye Jing , Paquet Fabien 
Published: June 2021

AbstractThe passive margin of the Guiana Shield formed at the junction of the Central and Equatorial Atlantic Oceans that developed successively by a complex rifting process that achieved the final dispersal of Western Gondwana. Yet, the resulting spatial distribution of crustal thinning along the margin remains to be mapped and its controlling parameters deciphered. We used subsurface data to map the variability of crustal thinning along the margin. We show that the margin segments width primarily depends on their obliquity to rifting extension direction. The necking domain of the transform/oblique margin segments is much narrower (<100 km) than divergent segments that include hyper‐extended or distal margin domains as well (200–300 km). Moreover, for a similar obliquity, the width of margin segments resulting from the Central Atlantic rifting are wider than those resulting from the Equatorial Atlantic rifting. This is primarily due to the higher obliquity and rate of the latter. Additionally, along the Central Atlantic margin segments, thinning was accommodated by lower‐crustal ductile deformation, the thick syn‐rift in‐fill was associated with magmatism and a thicker than average oceanic crust. In contrast, the Equatorial Atlantic margin segments show little ductile deformation, reduced clastic syn‐rift infill and thinner than average oceanic crust. These observations suggest that the lithosphere affected by the Central Atlantic rifting was warmer than that affected by the Equatorial Atlantic rifting. Finally, the two‐step thinning in the overlapping area of the two rift systems individualized a promontory of thinned continental crust that remained as the Demerara Plateau.
Why are Surface Ocean pH and CaCO3 Saturation State Often out of Phase in Spatial Patterns and Seasonal Cycles?
Authors: Xue Liang , Cai Wei‐Jun , Jiang Li‐Qing , Wei Qinsheng 
Published: June 2021

AbstractAs two most important metrics for ocean acidification (OA), both pH and calcium carbonate mineral saturation states (Ω) respond sensitively to anthropogenic carbon dioxide (CO2). However, contrary to intuition, they are often out of phase in the global surface ocean, both spatially and seasonally. For example, during warm seasons, Ω is lowest at high‐latitude seas where there are very high pH values, challenging our understanding that high‐latitude seas are a bellwether for global OA. To explain this phenomenon, we separate spatial and seasonal variations of both pH and Ω into thermal components mainly associated with internal acid‐base equilibrium of seawater CO2 systems, and nonthermal components mainly associated with external CO2 addition/removal using a global surface ocean climatological data set. We find that surface pH change is controlled by the balance between its thermal and nonthermal components, which are out of phase but comparable in magnitude. In contrast, surface Ω change is dominated by its nonthermal components, with its thermal components in phase and significantly smaller in magnitude. These findings explain why surface ocean pH and Ω are often out of phase in spatial patterns and seasonal cycles. When pH is primarily controlled by nonthermal components e.g., gas exchange, mixing and biology, pH and Ω will be in phase because their nonthermal components are intrinsically in phase. In comparison, when pH is primarily controlled by thermal components for example, rapid seasonal cooling or warming, pH and Ω will be out of phase because thermal and nonthermal components of pH are out‐of‐phase in nature.
Diverse Dynamical Response to Orographic Gravity Wave Drag Hotspots—A Zonal Mean Perspective
Authors: Sacha P. , Kuchar A. , Eichinger R. , Pisoft P. , Jacobi C. , Rieder H. E. 
Published: June 2021

AbstractIn the extratropical atmosphere, Rossby waves (RWs) and internal gravity waves (GWs) propagating from the troposphere mediate a coupling with the middle atmosphere by influencing the dynamics therein. In state‐of‐the‐art chemistry‐climate models (CCMs), RW effects are well resolved while the majority of GW effects have to be parameterized. Here, we analyze orographic GW (OGW) interaction with resolved dynamics in a comprehensive CCM on daily time scales. For this, we apply a recently developed method of strong OGW drag event composites for three pronounced northern hemisphere OGW hotspots. We show that strong OGW drag events are associated with anomalous resolved wave propagation in the stratosphere. Causal links are inferred from previously published work and are supported by the anomalies in zonal circulation and wave activity tendencies. The nature of these anomalies varies depending on the hotspot region, which underlines the parameterized OGW‐resolved dynamics interaction being a two‐way process.
Laboratory Verification of Electron‐Scale Reconnection Regions Modulated by a Three‐Dimensional Instability
Authors: Greess S. , Egedal J. , Stanier A. , Daughton W. , Olson J. , Lê A. , Myers R. , Millet‐Ayala A. , Clark M. , Wallace J. , Endrizzi D. , Forest C. 
Published: June 2021

AbstractDuring magnetic reconnection in collisionless space plasma, the electron fluid decouples from the magnetic field within narrow current layers, and theoretical models for this process can be distinguished in terms of their predicted current layer widths. From theory, the off‐diagonal stress in the electron pressure tensor is related to the thermal noncircular orbit motion of electrons around the magnetic field lines. This stress becomes significant when the width of the reconnecting current layer approaches the small characteristic length scale of the electron motion. To aid in situ spacecraft and numerical investigations of reconnection, the structure of the electron diffusion region is here investigated using the Terrestrial Reconnection Experiment. In agreement with the closely matched kinetic simulations, laboratory observations reveal the presence of electron‐scale current layer widths. Although the layers are modulated by a current‐driven instability, three‐dimensional simulations demonstrate that it is the off‐diagonal stress that is responsible for breaking the frozen‐in condition of the electron fluid.
Revisiting the Atlantic South Equatorial Current
Authors: Luko C. D. , da Silveira I. C. A. , Simoes‐Sousa I. T. , Araujo J. M. , Tandon A. 
Published: June 2021

AbstractThe southern branch of the South Equatorial Current (SSEC) is the northern limit of the South Atlantic Subtropical Gyre. When this current reaches Brazil around 14°S it bifurcates into a southward flow as the Brazil Current (BC) and the surface portion of the northward flowing North Brazil Undercurrent (NBUC). The SSEC system is a key component of the western boundary supply, influencing the NBUC/BC variability and, therefore, global climate through the Meridional Overturning Circulation. In this study, using altimetry satellite data and reanalyzes outputs (1993–2018), we revisit the SSEC mean state and show this current arriving at the South Atlantic western boundary as a multi‐banded flow with surface signatures resulting from different subsurface cores. These bands have velocities between 0.02 and 0.07 m s−1 and, as shown by ADCP data from the PIRATA project, their signature in synoptic scenarios is obscured by eddies and waves with velocities between 0.1 and 0.3 m s−1. In addition, the SSEC annual cycle analysis shows that the seasonality of the bands is out of phase with each other, presenting westward transport anomalies between 0.4 and 2.6 Sv. Finally, our results show that the seasonality of this multi‐banded flow both defines where the BC is born, and modulates the seasonality of semi‐permanent mesoscale eddies off Brazil.