scholarly journals Diagnosing Subsidence Geohazard at Beijing Capital International Airport, from High-Resolution SAR Interferometry

2020 ◽  
Vol 12 (6) ◽  
pp. 2269 ◽  
Author(s):  
Keren Dai ◽  
Xianlin Shi ◽  
Jisong Gou ◽  
Leyin Hu ◽  
Mi Chen ◽  
...  
Keyword(s):  
High Resolution ◽  
Active Faults ◽  
Sar Interferometry ◽  
Soil Thickness ◽  
International Airport ◽  
The Future ◽  
Over Exploitation ◽  
Compressible Soil ◽  
First Time

Beijing Capital International Airport (BCIA) has suffered from uneven land subsidence since 1935, which affects the smoothness of airport runways and seriously threatens the safety of aircrafts. In this paper, a spaceborne interferometric synthetic aperture radar (InSAR) with high-resolution Cosmo-SkyMed SAR data was utilized at BCIA for the first time to diagnose the subsidence hazard. The results show that subsidence is progressing at BCIA at a maximum rate of 50 mm/year, which is mainly distributed in the northwest side of the airport. It was found that the Shunyi-Liangxiang fault directly traverses Runway2 and Runway3 and causes uneven subsidence, controlling the spatial subsidence pattern to some degree. Four driving factors of subsidence were investigated, namely: the over-exploitation of groundwater, active faults, compressible soil thickness, and aquifer types. For the future sustainable development of BCIA, the influence of Beijing new airport and Beijing Daxing International Airport (BDIA), was analyzed and predicted. It is necessary to take relevant measures to control the uneven subsidence during the initial operation of BDIA and conduct long-term monitoring to ensure the regular safe operation of BCIA. This case demonstrates a remote sensing method of diagnosing the subsidence hazard with high accuracy and non-contact, providing a reliable alternative for the geohazard diagnosis of key infrastructures in the future.

scholarly journals V. Bryusov’s Letters to His Fiancée

Literary Fact ◽  
2021 ◽  
pp. 8-30
Author(s):  
Monika V. Orlova
Keyword(s):  
Young People ◽  
Full Text ◽  
Terminally Ill ◽  
The Past ◽  
The Future ◽  
State Of Mind ◽  
First Time ◽  
The Village ◽  
The Relationship

The publication includes V.Ya. Bryusov’s letters to his fiancée I.M. Runt (1876 –1965) from June 9 to September 9, 1897. 11 correspondences, including the final telegram sent from Kursk, were written and sent from Aachen (Germany), Moscow and several Ukrainian localities. The letter 10 is accompanied by the full text of I.M. Runt’s only surviving letter to Bryusov, sent from Moscow to the village of Bolshye Sorochintsy and received by the poet a few months later at home. The relationship between the young people before the wedding were complicated. While the poet was preparing for the wedding in Moscow, he summed up the past contacts with “mes amantes”, and his state of mind was painful. Shortly before meeting his future wife, Bryusov broke up with the former governess of his family E.I. Pavlovskaya, who was terminally ill. A few days before the wedding he decided to go to say goodbye to Pavlovskaya to her homeland, Ukraine. In his letters to the future wife the poet tried to smooth out the tension of the situation, perhaps anticipating that he would be bounded with I.M. Runt 30 Литературный факт. 2021. № 2 (20) by a long-term relationship, where life and literature are closely interconnected. The letters are published for the first time.

Current R & D Activities in the Study on Geosphere Stability

2010 ◽  
Author(s):  
Takahiro Hanamuro ◽  
Ken-Ichi Yasue ◽  
Yoko Saito-Kokubu ◽  
Koichi Asamori ◽  
Tsuneari Ishimaru ◽  
...  
Keyword(s):  
Prediction Model ◽  
Hot Spring ◽  
Active Faults ◽  
Hydrogen Gas ◽  
Helium Isotope ◽  
Sea Level Changes ◽  
Detection Techniques ◽  
Geothermal Activity ◽  
The Future

The Japanese islands are located in a tectonically active zone. The scientific base is required for assessing the geosphere stability for long-term isolation of radioactive waste in Japan. JAEA is promoting the establishment of investigation method for geotectonic events affecting geosphere stability and prediction model for the future changes of geological environments, that is necessary for site selection and safety assessment of the HLW geological disposal. For seismicity and faulting, detection techniques for active faults without topographic surface expression, such as using helium isotope ratios in hot spring gases or detection of hydrogen gas, and studies on the assessment of fault evolution have been developed. For volcanism and geothermal activity, heat sources for anomalous geothermal activity in non-volcanic regions are considered. Detection techniques for high-temperature fluids and magma deep underground, using geophysical and geochemical approaches, were constructed. For uplift, denudation and climatic/sea-level changes, a methodology to predict the future topographic change was developed. Also, for dating techniques as an essential part to proceed on these studies, C-14 and Be-10 dating using AMS and (U-Th)/He dating using QMS and ICP-MS have been developed. We are planning the establishment of assessment methods for geosphere stability including assessment of the activity of faults encountered in underground excavations, development of long-term prediction model of volcanism and hydrothermal activities, and hydrogeological analyses considering topographic change.

Estimating surface displacement in the Hanshin area, Japan, by PS-InSAR analysis using satellite Sentinel-1 data

2021 ◽  
Author(s):  
Yutaro Shigemitsu ◽  
Kazuya Ishitsuka ◽  
Weiren Lin
Keyword(s):  
Fault Zone ◽  
Groundwater Level ◽  
Active Faults ◽  
Surface Displacement ◽  
Sar Interferometry ◽  
Surface Displacements ◽  
Active Segment ◽  
2018 Northern Osaka Earthquake ◽  
Groundwater Level Changes

<p>The 2018 northern Osaka earthquake with a magnitude 6.1 earthquake struck on June 18, 2018 in northern Osaka, causing enormous damage. SAR interferometry using satellite synthetic aperture radar (SAR) data can detect surface displacement distribution over a wide area and is effective for observing surface displacement during an earthquake. On the other hand, it is also important to observe the tendency of long-term surface displacement around active faults on a yearly basis in order to monitor the deformation at and around active faults. In this study, we used persistent scatter SAR interferometry (PS-InSAR) to clarify the recent surface displacement including before and after the 2018 northern Osaka earthquake near the Arima-Takatsuki Fault Zone and the Mt. Rokko active segment, near the epicenter of the earthquake. PS-InSAR analysis is a method that analyzes coherent pixels only, and can extract surface displacements with less noise than the conventional two-pass SAR interferometry. By using Sentinel-1 data, we expect to understand a long-term surface displacement and temporal changes in displacement pattern by comparing with the results using other satellites in previous studies. As a result of our analysis, we found that (i) ground subsidence occurred near the Mt. Rokko active segment, (ii) subsidence or eastward displacement occurred in the eastern part of the Takarazuka GNSS station, (iii) surface displacement in the wedge-shaped area located between the Arima-Takatsuki Fault Zone and the Mt. Rokko active segment is suggested to be caused by groundwater level changes, (iv) groundwater level changes may have caused surface displacement considered to be uplift in the wide area between the Ikoma Fault Zone and Uemachi Fault Zone, and (v) slip of the source fault may have caused surface displacement around the epicenter of the 2018 northern Osaka earthquake. Furthermore, we validated the estimated surface displacements by comparison with GNSS measurements and previous studies. These results suggest that surface displacement near the Arima-Takatsuki fault zone was caused by the 2018 northern Osaka earthquake. In order to reveal the mechanism of surface displacement in the vicinity of the fault, it is necessary to continue to monitor the surface displacement in this area using time-series SAR interferometry.</p><p> </p><p> </p><p>We acknowledge Sentinel-1 data provided from the European Space Agency (ESA) based on the open data policy.</p>

scholarly journals Predictors of Employees’ Preference for Working from Home Post-Pandemic

2021 ◽  
Vol 11 (2) ◽  
pp. 1
Author(s):  
Paula M. Caligiuri ◽  
Helen De Cieri
Keyword(s):  
Work Life ◽  
Need Fulfillment ◽  
Work From Home ◽  
Working From Home ◽  
Global Pandemic ◽  
The Future ◽  
First Time ◽  
Work Life Conflict ◽  
At Home

The global pandemic of 2020-21 has enabled an examination of the conditions under which working from home is preferred. We examine whether work-life conflict (both work interfering with family and family interfering with work) and need fulfillment (autonomy, relatedness, competence) can be used to predict employees’ preference for working from home in the future, post-pandemic. With a sample of 944 employees working from home for the first time, this study found that work-life conflict was negatively related and need fulfillment was positively related to employees’ preference for working from home post-pandemic. The experience of having children at home or a partner who was also working from home did not affect employees’ long-term preference for working from home; however, being female did. Women were less likely to want to work from home post-pandemic. The implications for ways to maximize the experience of working from home in the future are discussed.

Reflections on the Community in the Aftermath of the Meeting of the European Council in Milan

1985 ◽  
Vol 20 (4) ◽  
pp. 444-452
Author(s):  
Émile Noël
Keyword(s):  
Financial Crisis ◽  
European Commission ◽  
European Community ◽  
European Council ◽  
The Future ◽  
Heads Of State ◽  
Council Of Ministers ◽  
Back Order ◽  
First Time

THE EUROPEAN COMMUNITY HAS BEEN IN A STATE OF ALMOST perpetual crisis since 1979: a financial crisis, institutional drift, the lack of long-term objectives. Nevertheless the patient efforts to bring back order into its affairs which were undertaken after the European Council at Stuttgart (1983) and tenaciously pursued by the European Commission under Mr Thorn's presidency, as well as by the successive presidents of the Council of Ministers, are at last coming to fruition. For the first time in many years, the heads of state or of government have been able to devote themselves in Milan to genuinely political reflections – to concentrate their thoughts on the future Europe and the means of building it. Even if the dialogue was only too often replaced by confrontation, nevertheless, the debate has begun and is bound to continue.

scholarly journals Fiber optic monitoring of active faults at the seafloor: I the FOCUS project

Photoniques ◽  
2019 ◽  
pp. 32-37 ◽  
Author(s):  
Marc-André Gutscher ◽  
Jean-Yves Royer ◽  
David Graindorge ◽  
Shane Murphy ◽  
Frauke Klingelhoefer ◽  
...  
Keyword(s):  
Water Depth ◽  
Health Monitoring ◽  
Active Fault ◽  
Fiber Optic ◽  
Active Faults ◽  
Dual Use ◽  
First Time ◽  
Seafloor Observatory ◽  
Laser Reflectometry

Laser reflectometry (BOTDR), commonly used for structural health monitoring (bridges, dams, etc.), will for the first time be applied to study movements of an active fault on the seafloor 25 km offshore Catania Sicily. The goal of the European funded FOCUS project (ERC Advanced Grant) is to connect a 6-km long strain cable to the EMSO seafloor observatory in 2100 m water depth. Laser observations will be calibrated by seafloor geodetic instruments and seismological stations. A long-term goal is the development of dual-use telecom cables with industry partners.

A new approach to detecting vegetation and land-use Change using high-resolution lipid biomarker records in stalagmites

2007 ◽  
Vol 68 (3) ◽  
pp. 314-324 ◽  
Author(s):  
Alison J. Blyth ◽  
Asfawossen Asrat ◽  
Andy Baker ◽  
Pauline Gulliver ◽  
Melanie J. Leng ◽  
...  
Keyword(s):  
Land Use ◽  
High Resolution ◽  
Land Use Changes ◽  
New Approach ◽  
Lipid Biomarker ◽  
First Time ◽  
The Relationship ◽  
Early Human ◽  
Over Time

AbstractA hundred-year stalagmite lipid biomarker record from Mechara, southeastern Ethiopia, is presented. The record has been recovered at a 10-yr temporal resolution, marking the first time this has been achieved in stalagmite biomarker work and providing the first opportunity to investigate the relationship between stalagmite lipid records and hydrological transport lags, a vital issue in interpreting palaeoenvironmental signals. Preserved plant-derived n-alkanes and n-alkanols show clear changes in composition over time, relating to known land-use changes in the area, particularly the expansion of agriculture in the early twentieth century. The level of environmental detail provided by this technique, combined with the long-term chronological framework offered by stalagmites, holds significant promise for the investigation of early human environments and their associated climatic and anthropogenic controls.

scholarly journals Firn changes at Colle Gnifetti revealed with a high-resolution process-based physical model approach

2021 ◽  
Author(s):  
Enrico Mattea ◽  
Horst Machguth ◽  
Marlene Kronenberg ◽  
Ward van Pelt ◽  
Manuela Bassi ◽  
...  
Keyword(s):  
High Resolution ◽  
Meteorological Data ◽  
Ice Core ◽  
Snow Accumulation ◽  
Balance Model ◽  
Monte Rosa ◽  
First Time ◽  
Fully Coupled ◽  
Marked Tendency

Abstract. Our changing climate is expected to affect ice core records as cold firn progressively transitions to a temperate state. Thus there is a need to improve understanding and further develop quantitative process modeling, to better predict cold firn evolution under a range of climate scenarios. Here we present the application of a distributed, fully coupled energy balance model, to simulate high-alpine cold firn at Colle Gnifetti over the period 2003–2018. For the first time, we force such a model with high-resolution, long-term and extensively quality-checked meteorological data measured in closest vicinity of the firn site, at the Capanna Margherita (4560 m a.s.l.). The model incorporates the spatial variability of snow accumulation rates, and is calibrated using several, partly unpublished high-altitude measurements from the Monte Rosa area. The simulation reveals a very good overall agreement in the comparison with a large archive of firn temperature profiles. The rate of firn warming at 20 m depth is estimated at 0.44 °C per decade. Our results show that surface melt over the glaciated saddle is increasing by 3–4 mm w.e. yr−2 depending on the location (29–36 % in 16 years), although with large inter-annual variability. Analysis of modeled melt indicates a marked tendency towards small melt events (

scholarly journals Asoka Spintex

2000 ◽  
Vol 25 (2) ◽  
pp. 63-70
Author(s):  
Parvinder Gupta
Keyword(s):  
Balance Sheet ◽  
Group Company ◽  
Term Survival ◽  
Long Term Survival ◽  
The Future ◽  
Set Up ◽  
First Time ◽  
Positive Results ◽  
Future Plans

The October-December 1999 (Vol 24, No 4) issue of Vikalpa had published a Management Case titled “Asoka Spintex” by Parvinder Gupta. The case had focused on the turnaround of Asoka Spintex from an ailing company in 1987 to a growing company in the year 1997. We had requested the readers to respond to the question: What strategies should Anang Lalbhai adopt for the long-term survival of the company? In this issue, we are featuring three responses on the case by Pradip N Khandwalla, S Ramnarayan and Niti Pandey, and N Ravichandran. Asoka Spintex, a Lalbhai group company, was set up in 1920 in Ahmedabad, Gujarat, to manufacture coarse and medium fabrics with a capacity of 13,000 spindles and 350 looms. Since its inception, the company did reasonably well. However, the balance sheet for the year 1987 showed cash loss for the first time in three decades. The company was on the verge of closure in 1991-92; however, subsequently, it started showing positive results. The case discusses the background of Asoka Spintex, the troubled times (1985-1990), the phase of uncertainties (mid 1990-mid 1992), the phase of struggles and challenges (1992-1995), and the phase of consolidation and growth (1995-1997). The case concludes with a discussion on the future plans of Asoka Spintex.

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