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首页> 外文期刊>Journal of the American Water Resources Association >SUMMER LOW FLOWS IN NEW ENGLAND DURING THE 20TH CENTURY
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SUMMER LOW FLOWS IN NEW ENGLAND DURING THE 20TH CENTURY

机译：20世纪新英格兰夏季流量低

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摘要

High springtime river flows came earlier by one to two weeks in large parts of northern New England during the 20th Century. In this study it was hypothesized that late spring/early summer recessional flows and late summer/early fall low flows could also be occurring earlier. This could result in a longer period of low flow recession and a decrease in the magnitude of low flows. To test this hypothesis, variations over time in the magnitude and timing of low flows were analyzed. To help understand the relation between low flows and climatic variables in New England, low flows were correlated with air temperatures and precipitation. Analysis of data from 23 rural, unregulated rivers across New England indicated little evidence of consistent changes in the timing or magnitude of late summer/early fall low flows during the 20th Century. The interannual variability in the timing and magnitude of the low flows in northern New England was explained much more by the interannual variability in precipitation than by the interannual variability of air temperatures. The highest correlation between the magnitude of the low flows and air temperatures was with May through November temperatures (r = -0.37, p = 0.0017), while the highest correlation with precipitation was with July through August precipitation (r = 0.67, p < 0.0001).
机译：20世纪，在新英格兰北部大部分地区，春季春季河水流量提前了一到两周。在这项研究中，假设春末/夏初的衰退流量和夏末/初秋的低流量也可能较早发生。这可能会导致低流量衰退的时间更长，并导致低流量幅度的减少。为了检验该假设，分析了低流量的大小和时间随时间的变化。为了帮助了解新英格兰的低流量与气候变量之间的关系，将低流量与气温和降水量相关联。对来自新英格兰各地23条未管制的农村河流的数据进行的分析表明，很少有证据表明20世纪夏末/初秋的低潮流量的时间或大小发生持续变化。在新英格兰北部，低流量的时间和大小的年际变化主要是因为降水的年际变化而不是气温的年际变化。低流量的大小与气温之间的最大相关性是与五月至十一月的温度（r = -0.37，p = 0.0017），而与降水的最大相关性是与七月至八月的降水（r = 0.67，p <0.0001） ）。

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