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湖泊富营养化导致的水华问题严重影响了淡水资源的利用和保护,快速、全面、准确的监测水华信息对于湖泊水环境的治理具有十分重要的意义.本文以巢湖为研究区域,利用多源光学遥感影像和时空融合技术,采用波段融合的方式将NDVI指数波段加入到遥感影像当中,并通过监督分类解译水华信息,以此揭示2009-2018年10年间巢湖水华的时空变化规律.结果表明:巢湖发生的水华以零星和局部水华为主,2012年巢湖水体首次出...
贵阳市百花湖近10年(2009-2018年)的水质时空变化
百花湖 水质 综合营养状态指数(TLI) 营养盐 水文气象条件
2021/2/25
百花湖是贵阳市重要的城市饮用水源地,并且近年来经常发生水质异常现象.本文利用2009-2018年百花湖长时间序列的监测数据,采用综合营养状态指数法和Pearson相关性分析,研究了百花湖10年间的水质变化特征和影响因素.结果表明:1)库区叶绿素a(Chl.a)、总磷(TP)、总氮(TN)、高锰酸盐指数(CODMn)和透明度(SD)的浓度范围分别是3.43~39.72 mg/m3、0.034~0.1...
贵州红枫湖近10年来(2009-2018年)水质变化及影响因素
红枫湖 水质 综合营养状态指数(TLI) 营养盐 气象水文条件
2020/9/22
为更好地研究贵州红枫湖的水质变化情况,本文利用贵阳市两湖一库环境保护监测站2009-2018年对红枫湖7个代表性监测点的营养盐、叶绿素a(Chl.a)浓度和水温、气温、透明度、降雨量等水文气象条件逐月监测数据,分析红枫湖10年间水体营养盐和Chl.a浓度以及部分水文气象条件的变化趋势.运用综合营养状态指数(TLI)对红枫湖营养状态进行评价,采用Pearson相关系数法统计分析10年内Chl.a浓度...
The role of obesity in the relation between total water intake and urine osmolality in US adults, 2009–2012
effect modification hydration status NHANES obesity water intake
2018/12/19
Background: Adequate water intake is critical to physiologic and cognitive functioning. Although water requirements increase with body size, it remains unclear whether weight status modifies the relat...
Secular trends for skinfolds differ from those for BMI and waist circumference among adults examined in NHANES from 1988–1994 through 2009–2010
BMI NHANES secular trends skinfolds waist circumference
2018/11/12
Background: Although the prevalence of a body mass index [BMI (in kg/m2)] ≥30 has tripled among US adults since the 1960s, BMI is only moderately correlated with body fatness. Because skinfolds can mo...
Usual nutrient intakes of US infants and toddlers generally meet or exceed Dietary Reference Intakes: findings from NHANES 2009–2012
infants and toddlers nationally representative sample nutrient adequacy recommended intakes usual nutrient intake
2018/12/14
Usual nutrient intakes of US infants and toddlers generally meet or exceed Dietary Reference Intakes: findings from NHANES 2009–2012
infants and toddlers nationally representative sample nutrient adequacy recommended intakes usual nutrient intake
2018/12/18
Background: To our knowledge, few studies have described the usual nutrient intakes of US children aged <2 y or assessed the nutrient adequacy of their diets relative to the recommended Dietary Refere...
The April 6, 2009, Mw 6.3, L'Aquila sequence: weak-motion and strong-motion data recorded by the RAIS temporary stations
Surveys measurements and monitoring Seismological data L'Aquila earthquake Aftershocks
2015/8/28
The aim of this study is the sharing of waveforms recorded by several Istituto Nazionale di Geofisica e Vulcanologia (INGV) temporary stations (managed by the Milan-Pavia section; INGV MI-PV). These s...
Non-permanent GPS data for regional-scale kinematics: reliable deformation rate before the 6 April, 2009, earthquake in the L'Aquila area
GPS Non-permanent station Subsampling Velocity Strain field
2015/8/28
A GPS-based geodetic study at a regional scale requires the availability of a dense network that is characterized by 10 km to 30 km spacing, typically followed in a few continuous GPS stations (CGPSs)...
Displacement across the Trecastagni Fault (Mt. Etna) and induced seismicity: the October 2009 to January 2010 episode
Wire extensometer creep shallow earthquakes fault dynamic
2015/8/27
The Trecastagni Fault (TF) is a NNW-SSE tectonic structure inside Mt. Etna that is characterized by evident morphological scarps and normal and right-lateral type movements that directly affect roads ...
The British Geological Survey is responsible for conducting the UK geomagnetic repeat station programme. Measurements made at the UK repeat station sites are used in conjunction with the three UK magn...
Total electron content variations over southern Europe before and during the M 6.3 Abruzzo earthquake of April 6, 2009
GPS network ionospheric total electron content wavelet analysis
2015/8/24
Total electron content (TEC) data of 14 global positioning system (GPS) stations of the EUREF network were provided by the IONOLAB. These were analyzed using wavelet analysis and discrete Fourier anal...
In this work, we present the seismic catalogue compiled for Central Asia (Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan and Turkmenistan) in the framework of the Earthquake Model Central Asia (EMCA) ...
The 2009 L’Aquila earthquake coseismic rupture: open issues and new insights from 3D finite element inversion of GPS, InSAR and strong motion data
GPS open issues and new insights
2015/8/17
We present a Finite Element inverse analysis of the static deformation
field for the Mw= 6.3, 2009 L’Aquila earthquake, in order to infer the rupture
slip distribution on the fault plane. An univoca...