scholarly journals GNSS characterization of hydrological loading in South and Southeast Asia

2020 ◽  
Vol 224 (3) ◽  
pp. 1742-1752
Author(s):  
Kathryn Materna ◽  
Lujia Feng ◽  
Eric O Lindsey ◽  
Emma M Hill ◽  
Aktarul Ahsan ◽  
...  
Keyword(s):  
Southeast Asia ◽  
Water Distribution ◽  
Northeast India ◽  
Global Navigation Satellite Systems ◽  
Elastic Response ◽  
Near Surface ◽  
Surface Mass ◽  
South And Southeast Asia ◽  
Elastic Loading ◽  
Gnss Data

SUMMARY The elastic response of the lithosphere to surface mass redistributions produces geodetically measurable deformation of the Earth. This deformation is especially pronounced in South and Southeast Asia, where the annual monsoon produces large-amplitude hydrological loads. The Myanmar–India–Bangladesh–Bhutan (MIBB) network of about 20 continuously operating Global Navigation Satellite Systems (GNSS) stations, established in 2011, provides an opportunity to study the Earth's response to these loads. In this study, we use GRACE temporal gravity products as an estimate of long-wavelength surface water distribution and use this estimate in an elastic loading calculation. We compare the predicted vertical deformation from GRACE with that observed with GNSS. We find that elastic loading inferred from the GRACE gravity model is able to explain the phase and much of the peak-to-peak amplitude (typically 2–3 cm) of the vertical GNSS oscillations, especially in northeast India and central Myanmar. GRACE-based corrections reduce the RMS scatter of the GNSS data by 30–45% in these regions. However, this approach does not capture all of the seasonal deformation in central Bangladesh and southern Myanmar. We show by a synthetic test that local hydrological effects may explain discrepancies between the GNSS and GRACE signals in these places. Two independent hydrological loading models of water stored in soil, vegetation, snow, lakes and streams display phase lags compared to the GRACE and GNSS observations, perhaps indicating that groundwater contributes to the observed loading in addition to near-surface hydrology. The results of our calculations have implications for survey-mode GNSS measurements, which make up the majority of geodetic measurements in this region. By using the GNSS data together with estimates of hydrological loading from independent observations and models, we may be able to more accurately determine crustal motions caused by tectonic processes in South and Southeast Asia, while also improving our ability to monitor the annual monsoon and resulting water storage changes in the region.

scholarly journals Austro-Asiatic Tribes of Northeast India Provide Hitherto Missing Genetic Link between South and Southeast Asia

PLoS ONE ◽  
2007 ◽  
Vol 2 (11) ◽  
pp. e1141 ◽  
Author(s):  
B. Mohan Reddy ◽  
B. T. Langstieh ◽  
Vikrant Kumar ◽  
T. Nagaraja ◽  
A. N. S. Reddy ◽  
...  
Keyword(s):  
Southeast Asia ◽  
Northeast India ◽  
Genetic Link ◽  
South And Southeast Asia

scholarly journals An old collection reveals an additional distribution record of the Greater Long-tongued Fruit Bat Macroglossus sobrinus K. Anderson, 1911 (Chiroptera: Pteropodidae) from southern West Bengal, India

2018 ◽  
Vol 10 (13) ◽  
pp. 12837-12839
Author(s):  
Tauseef Hamid Dar ◽  
M. Kamalakannan ◽  
C. Venkatraman ◽  
Kailash Chandra
Keyword(s):  
Southeast Asia ◽  
West Bengal ◽  
Detailed Examination ◽  
Northeast India ◽  
External Morphology ◽  
First Report ◽  
Fruit Bat ◽  
South And Southeast Asia ◽  
Small Fruit ◽  
Distribution Record

Greater Long-tongued Fruit Bat Macroglossus sobrinus K Anderson, 1911 is one of the small fruit bat found in South and Southeast Asia. In India, this species has only been reported from northern West Bengal, Sikkim and Northeast India. Upon detailed examination of the external morphology, skull and dentition of a single bat specimen, which was collected from Narendrapur, South 24- Parganas district in West Bengal (southern West Bengal) during the year 1995 and deposited in the National Zoological Collections of Zoological Survey of India, was identified as Macroglossus sobrinus. It is the first report on the occurrence of the species from southern West Bengal, extended distribution by more than 600 km southward from the known localities in Darjeeling in northern West Bengal.

scholarly journals Interventional nephrology and vascular access practice: A perspective from South and Southeast Asia

2021 ◽  
pp. 112972982110113
Author(s):  
Raja Ramachandran ◽  
Vinant Bhargava ◽  
Sanjiv Jasuja ◽  
Maurizio Gallieni ◽  
Vivekanand Jha ◽  
...  
Keyword(s):  
Southeast Asia ◽  
Vascular Access ◽  
Central Catheter ◽  
Middle Income ◽  
Middle Income Countries ◽  
South And Southeast Asia ◽  
Group 2 ◽  
Venous Fistula ◽  
Economic Constraints ◽  
Group 1

South and Southeast Asia is the most populated, heterogeneous part of the world. The Association of Vascular Access and InTerventionAl Renal physicians (AVATAR Foundation), India, gathered trends on epidemiology and Interventional Nephrology (IN) for this region. The countries were divided as upper-middle- and higher-income countries as Group-1 and lower and lower-middle-income countries as Group-2. Forty-three percent and 70% patients in the Group 1 and 2 countries had unplanned hemodialysis (HD) initiation. Among the incident HD patients, the dominant Vascular Access (VA) was non-tunneled central catheter (non-TCC) in 70% of Group 2 and tunneled central catheter (TCC) in 32.5% in Group 1 countries. Arterio-Venous Fistula (AVF) in the incident HD patients was observed in 24.5% and 35% of patients in Group-2 and Group-1, respectively. Eight percent and 68.7% of the prevalent HD patients in Group-2 and Group-1 received HD through an AVF respectively. Nephrologists performing any IN procedure were 90% and 60% in Group-2 and Group 1, respectively. The common procedures performed by nephrologists include renal biopsy (93.3%), peritoneal dialysis (PD) catheter insertion (80%), TCC (66.7%) and non-TCC (100%). Constraints for IN include lack of time (73.3%), lack of back-up (40%), lack of training (73.3%), economic issues (33.3%), medico-legal problems (46.6%), no incentive (20%), other interests (46.6%) and institution not supportive (26%). Routine VA surveillance is performed in 12.5% and 83.3% of Group-2 and Group-1, respectively. To conclude, non-TCC and TCC are the most common vascular access in incident HD patients in Group-2 and Group-1, respectively. Lack of training, back-up support and economic constraints were main constraints for IN growth in Group-2 countries.

scholarly journals Activated Ductile CFRP NSMR Strengthening

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2821
Author(s):  
Jacob Wittrup Schmidt ◽  
Christian Overgaard Christensen ◽  
Per Goltermann ◽  
José Sena-Cruz
Keyword(s):  
Failure Modes ◽  
Elastic Response ◽  
Applied Theory ◽  
Strengthening Effect ◽  
The Novel ◽  
Near Surface ◽  
Linear Elastic ◽  
Near Surface Mounted ◽  
High Elongation ◽  
Strengthened Beam

Significant strengthening of concrete structures can be obtained when using adhesively-bonded carbon fiber-reinforced polymer (CFRP) systems. Challenges related to such strengthening methods are; however, the brittle concrete delamination failure, reduced warning, and the consequent inefficient use of the CFRP. A novel ductile near-surface mounted reinforcement (NSMR) CFRP strengthening system with a high CFRP utilization is introduced in this paper. It is hypothesized that the tailored ductile enclosure wedge (EW) end anchors, in combination with low E-modulus and high elongation adhesive, can provide significant strengthening and ductility control. Five concrete T-beams were strengthened using the novel system with a CFRP rod activation stress of approximately 980 MPa. The beam responses were compared to identical epoxy-bonded NSMR strengthened and un-strengthened beams. The linear elastic response was identical to the epoxy-bonded NSMR strengthened beam. In addition, the average deflection and yielding regimes were improved by 220% and 300% (average values), respectively, with an ultimate capacity comparable to the epoxy-bonded NSMR strengthened beam. Reproducible and predictable strengthening effect seems obtainable, where a good correlation between the results and applied theory was reached. The brittle failure modes were prevented, where concrete compression failure and frontal overload anchor failure were experienced when failure was initiated.

Elicüra: The “Feasts of Merit” Shawl of the Chakhesang Naga of Northeast India

2021 ◽  
pp. 0972558X2199079
Author(s):  
Yekha-ü ◽  
Queenbala Marak
Keyword(s):  
Southeast Asia ◽  
Social Rank ◽  
Northeast India ◽  
Symbolic Meaning ◽  
Way Of Life ◽  
Gift Economy ◽  
The World ◽  
The Right

Feasts of Merit are an important social way of life among different tribes in the world, especially in Southeast Asia. In Northeast India, the different Naga tribes were well-known for this practice before the advent of Christianity. However, among the Chakhesang Nagas, after the advent of Christianity, the practices of giving feasts continue to this day with minor modifications in terms of rituals and taboos while the symbolic meaning and values behind this practice are retained. The Feasts of Merit, among them, are intricately connected to their worldview, whereby the feast-givers distribute their wealth in terms of sacrificing mithun, buffalo, and/or other livestock, in consecutive feasts, and receiving in return a higher social rank and the right to wear a special shawl (“Feasts of Merit” shawl), variously known as hapidasa, elicüra, and thüpikhü and the right to adorn the house with special architecture (mithun and buffalo wood carvings on the wall, and to put up a horn at the pinnacle of the house front). This article discusses the “Feasts of Merit” shawl and how it is connected intrinsically to the ethos of the tribe, and in doing so it states that the Chakhesang feasts can be looked upon as gift economy.

scholarly journals Postcolonial International Law Discourses on Regional Developments in South and Southeast Asia

2008 ◽  
Vol 36 (3) ◽  
pp. 387-431 ◽  
Author(s):  
Diane A. Desierto
Keyword(s):  
Southeast Asia ◽  
International Law ◽  
International Economic Order ◽  
Southeast Asian ◽  
Self Determination ◽  
International Humanitarian Law ◽  
Humanitarian Law ◽  
South And Southeast Asia ◽  
International Legal Order ◽  
International Legal System

The development of international law in South and Southeast Asia exemplifies myriad ideological strands, historical origins, and significant contributions to contemporary international law doctrines’ formative and codification processes. From the beginnings of South and Southeast Asian participation in the international legal order, international law discourse from these regions has been thematicallypostcolonialand substantivelydevelopment-oriented.Postcolonialism in South and Southeast Asian conceptions of international law is an ongoing dialectical project of revisioning international legal thought and its normative directions — towards identifying, collocating, and applying South and Southeast Asian values and philosophical traditions alongside the Euro-American ideologies that, since the classical Post-Westphalian era, have largely infused the content of positivist international law. Of increasing necessity to the intricacies of the postmodern international legal system and its institutions is how the postcolonial project of South and Southeast Asian international legal discourse focuses on areas of international law that create the most urgent development consequences: trade, investment, and the international economic order; the law of the sea and the environment; international humanitarian law, self-determination, socio-economic and cultural human rights.

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