...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ocean Dynamics >SLA-chlorophyll-a variability and covariability in the Algero-Provencal Basin (1997-2007) through combined use of EOF and wavelet analysis of satellite data
【24h】

SLA-chlorophyll-a variability and covariability in the Algero-Provencal Basin (1997-2007) through combined use of EOF and wavelet analysis of satellite data

机译：通过结合使用EOF和卫星数据的小波分析，阿尔及利亚-普罗旺斯盆地（1997-2007）的SLA叶绿素a的变异性和协变性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Data reduction and signal decomposition techniques have been applied to a large bio-physical remotely sensed dataset covering the decade 1997-2007. The aim was the estimation of the spatial (basin and sub-basin scales) and temporal (seasonal and interan-nual) variability of sea level anomalies and chlorophyll-a concentration in the Algero-Provencal Basin, as well as the study of their covariability. Empirical orthogonal functions, wavelet analysis, singular value decomposition and correlation maps have been successfully used to individuate the patterns of (co)variability of the investigated fields. The seasonal variability of the phy-toplanktonic biomass is divided in two distinct modes, timewise and spacewise separated. Positive interannual events are related to anomalies in 1999 and 2005, while the main (negative) anomaly is that of summer 2003, associated to the European 2003 heatwave. The analysis of the sea level anomalies shows a minimum in the formation of anticyclonic Algerian eddies during that period. The largest anticorrelation between sea level anomalies and phytoplanktonic biomass is found in the central zone of the basin, suggesting a clear biological response to the shoaling/deepening of the isopycnae and so to the nutrient injection into the euphotic layer. The analysis suggests that the driver of the variability of the nutricline depth in this central area is the displacement (seasonal) of the North Balearic Front and the formation/action of the frontal eddies.
机译：数据缩减和信号分解技术已应用于涵盖1997-2007十年的大型生物物理遥感数据集。目的是估算阿尔及利亚-普罗旺斯盆地海平面异常和叶绿素-a浓度的空间（盆地和亚盆地尺度）和时间（季节和年度）变化，并研究其协变性。经验正交函数，小波分析，奇异值分解和相关图已成功用于区分研究场的（共）变异性模式。浮游植物生物量的季节性变化分为两个不同的模式，即时间上和空间上分开。年际正事件与1999年和2005年的异常有关，而主要（负）异常是与2003年欧洲热浪有关的2003年夏季。对海平面异常的分析显示，在此期间反气旋阿尔及利亚涡流的形成最小。海平面异常与浮游植物生物量之间最大的反相关关系是在盆地中心区域发现的，这表明对异比目鱼的浅滩/深化以及营养物注入到富营养层有明显的生物学反应。分析表明，该中心区域营养深度的变化的动因是北巴利阿里锋的位移（季节）和锋涡的形成/作用。

著录项

  • 来源
    《Ocean Dynamics》 |2011年第1期|p.89-102|共14页
  • 作者

    Antonio Olita; Alberto Ribotti; Roberto Sorgente; Leopoldo Fazioli; Angelo Perilli;

  • 作者单位

    National Research Council, Institute for Coastal Marine Environment, Loc. Sa Mardini,09170 Torregrande (OR), Italy;

    National Research Council, Institute for Coastal Marine Environment, Loc. Sa Mardini,09170 Torregrande (OR), Italy;

    National Research Council, Institute for Coastal Marine Environment, Loc. Sa Mardini,09170 Torregrande (OR), Italy;

    National Research Council, Institute for Coastal Marine Environment, Loc. Sa Mardini,09170 Torregrande (OR), Italy;

    National Research Council, Institute for Coastal Marine Environment, Loc. Sa Mardini,09170 Torregrande (OR), Italy;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    sea level anomalies; chlorophyll-a; EOF; wavelets; satellite; mediterranean;

    机译：海平面异常;叶绿素a EOF;小波卫星;地中海;

相似文献

  • 外文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号