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1.
Bandana Baruah Prakash Kumar M. Ravi Kumar 《Journal of the Geological Society of India》2016,88(1):13-21
We compare the P-, S- and Lg- spectra of the 11th May, 1998 Pokhran underground nuclear explosion (NE) with those of an earthquake (EQ) of comparable magnitude that occurred in its vicinity (~100 km west) on 9th April, 2009, utilizing the waveforms recorded by a Global Seismograph Network station at Nilore (NIL), Pakistan. The contiguous occurrence of these events and the similarity of the travel paths provided a good opportunity to discriminate the nature of the sources. Our results suggest that the Pn/Lg and Pn/Sn amplitude ratios of the explosion and earthquake waveforms exhibit distinct differences in the higher frequency window. Further, since the P-phases have high signal to noise ratio compared to their S counterparts, we utilize their spectra to derive the source parameters of the NE and EQ sources. Our results show that the seismic moment, corner frequency and source dimension of the explosion are ~1.58X1017 Nm, 1.18 Hz and ~0.793 km respectively. The moment magnitude (MW) and surface wave magnitude (MS) for the nuclear explosion are estimated to be ~5.4 and ~3.57 respectively. The values of MW (5.3) and MS (4.3) obtained by us for the earthquake are consistent with the estimates in the Harvard catalog and earlier published results. The estimate of MW for the nuclear explosion was hitherto not available. Lastly, we estimate the yield of the NE to be ~50 kt from the surface wave magnitude and discuss the various limitations related to its estimation. 相似文献
2.
Hemant Sonkusare Bandana Samant D. M. Mohabey 《Journal of the Geological Society of India》2017,89(4):391-397
Micofloral study of Lameta sediments and associated sauropod coprolites in the Nand-Dongargaon basin in Maharashtra was conducted to understand the diet and habitat of sauropods. The study revealed the presence of pollen, spores, algal and fungal remains, well-preserved cuticles of Poaceae, and testate amoebae. Vegetation during Lameta included tall arboreal taxa, such as conifers (Podocarpus and Araucaria), Cycads (Cycas), Euphorian and Barringtonia and herbs and shrubs, such as Cheirolepidiaceae (Classopollis), Arecaceae (Palmaepollenites), Poaceae (Graminidites), Asteraceae (Compositoipollenites), Caryophyllaceae (Cretacaeiporites and Periporopollenites), and Acanthaceae (Multiareolites). Data suggest that the sauropods ate soft tissues of angiosperms and gymnosperms. The intake of testate amoeba, algal remains, sponge spicules, and diatoms might be through water intake. 相似文献
3.
The Myth of Location Privacy in the United States: Surveyed Attitude Versus Current Practices 总被引：1，自引：0，他引：1
In the United States, legal steps have been taken to protect personal privacy, which is viewed as an individual's fundamental right. Location privacy (i.e., protection of personal and location information), however, has not received equal attention in the legal system. Given the recent popularity of location-based services (e.g., cell phones), it is possible to obtain an individual's location information easily and precisely. An investigation of public perception of privacy in the United States indicated that survey responders (1) were unaware of legal implications of location privacy violation and (2) believed that there should be location privacy protection similar to that provided by the Health Insurance Portability and Accountability Act and the Family Educational Rights and Privacy Act. 相似文献
4.
In recent years, the increase in the number of hurricanes and other costal hazards in the US pose a tremendous threat to the residents of coastal states. According to the National Hurricane Center, Florida is the most vulnerable coastal state to hurricanes. Mitigation policies have been formulated to reduce mortality and provide emergency services by evacuating people from the hazard zone. Many of these evacuees, particularly the elderly or lower income populations, rely on evacuation shelters for temporary housing. Because of the cost and limited use, evacuation shelters are almost exclusively dual use shelters where the primary purpose of the facility is for some other public function (e.g. school, hospital, etc.). In 2000, the estimated shortage of public shelter spaces in Florida was about 1.5 million. The purpose of this study was to rank the existing and candidate shelters (schools, colleges, churches and community centers) available in the state based on their site suitability. The research questions examined in this study include: (1) How many candidate shelters are located in physically suitable areas (e.g. not in a flood prone area, not near hazardous facilities, etc.)?; (2) How many existing shelters are located in physically un suitable areas, but in socially suitable areas (situated in areas with demand)?; (3) How many alternative existing and/or candidate shelters with high/very high physical suitability are located near physically un suitable existing shelters and thus, may be better choices for a shelter?; and (4) How many existing shelters located in physically un suitable areas are not near alternative existing and/or candidate shelters? A Geographic Information System‐based suitability model integrating Weighted Linear Combination (WLC) with a Pass/Fail screening technique was implemented for the 17 counties of Southern Florida. It was found that 48% of the existing shelters are located in physically unsuitable areas. Out of all the candidate shelters, 57% are located in physically unsuitable areas. For 15 of the existing shelters in unsuitable locations, no alternative candidate or existing shelter with medium to high physical suitability exists within 10 miles (16.1 km). 相似文献
5.
Using structured telephone interviews this research focuses on how Canadian migrants living in the United States experience
and describe home. We argue that the globalisation of peoples’ lives, transnationalism and the concomitant creation of transnational
social spaces have greatly affected the meaning of home for migrants. The understandings of home that result reflect the reality
of living in social worlds that span two countries and the development of decentred multiple attachments and feelings of belonging
in more than one place. In response to these circumstances Canadian migrants experience home as multi-dimensional, pluri-local,
and characterized by regular movement across the U.S.–Canada border. When asked specifically about feeling at home upon re-entry
to the U.S. many respondents answered yes. However, many interviewees qualified their answers by describing home in different
ways and associating different aspects of their lives with each country. Canada as home was most often described in terms
of family, while home in the U.S. was associated with work. Respondents also differentiated between feeling at home once they
reached their residence as opposed to feeling unwelcome at the U.S. border. 相似文献
6.
B.Thilagavathi K.Raja Bandana Das A.Saravanakumar S.Vijayalakshmi T.Balasubramanian 《中国海洋大学学报(英文版)》2011,10(4):385-390
Core sediments from the Muthupettai mangroves on the southeast coast of India were analyzed for soil texture,total nitrogen,organic carbon,phosphorus and heavy metals(Fe,Mn,Cr,Cu,Ni,Pb,Zn and Cd).The distinct seasonal variation in the distribution of metals in the sediments was observed.The minimum concentration was recorded in river mouth and the maximum was in lagoon.High metal concentration in sediment was observed during monsoon and low concentration in summer.The total nu-trient in lagoon and river mouth was recorded in the range of 4.528 to 8.526 mg g-1 for organic carbon,2.213 to 10.5 mg g-1 for nitro-gen and 0.824 to 7.22 mg g-1. 相似文献
7.
Bandana Purkayastha 《Geoforum》2005,36(2):181-196
The research on skilled international migration focuses primarily on the experiences of male migrants. Little work has been done on female migrants, especially those who migrated as dependents of highly skilled males. This paper presents some data on Asian Indian women in the US, and argues that these women suffer from cumulative disadvantage. The paper emphasizes that it is necessary to adopt a complex model involving the interaction of gendered/racialised immigration laws, workplace and household experiences in order to understand the experiences of these women. 相似文献
8.
Balasubramanaian Thilagavathi Bandana Das Ayyappan Saravanakumar Kuzhanthaivel Raja 《Ocean Science Journal》2011,46(2):63-72
The ecological aspects of meiofaunal communities in the Muthupettai mangrove forest, East coast of India, has not been investigated
in the last two decades. Surface water temperature ranged from 23.5 °C to 31.8 °C. Salinity varied from 24 to 34 ppt, while
water pH fluctuated from 7.4 to 8.3. Dissolved oxygen concentration ranged from 3.86 to 5.33 mg/l. Meiofauna analysis in this
study identified a total of 106 species from the mangrove and adjacent open sea area of Sethukuda. Among these, 56 species
of foraminiferans, 20 species of nematodes, 7 species of harpacticoid copepods, 4 species of ostrocodes, and 2 species of
rotifers were identified. Furthermore, a single species was identified from the following groups: ciliophora, cnidaria, gnathostomulida,
insecta, propulida, bryozoa and polychaete larvae. Meiofaunal density varied between 12029 to 23493 individuals 10 cm/m2. The diversity index ranged from 3.515 to 3.680, species richness index varied from 6.384 to 8.497, and evenness index varied
from 0.839 to 0876 in the mangrove area and adjacent open sea. 相似文献
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