• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nature >Storms in the tropics of Titan
【24h】

Storms in the tropics of Titan

机译：泰坦热带风暴

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

Methane clouds, lakes and most fluvial features on Saturn's moon Titan have been observed in the moist high latitudes, while the tropics have been nearly devoid of convective clouds and have shown an abundance of wind-carved surface features like dunes. The presence of small-scale channels and dry riverbeds near the equator observed by the Huygens probe at latitudes thought incapable of supporting convection (and thus strong rain) has been suggested to be due to geological seepage or other mechanisms not related to precipitation. Here we report the presence of bright, transient, tropospheric clouds in tropical latitudes. We find that the initial pulse of cloud activity generated planetary waves that instigated cloud activity at other latitudes across Titan that had been cloud-free for at least several years. These observations show that convective pulses at one latitude can trigger short-term convection at other latitudes, even those not generally considered capable of supporting convection, and may also explain the presence of methane-carved rivers and channels near the Huygens landing site.
机译：在潮湿的高纬度地区观测到土星月亮土卫六上的甲烷云，湖泊和大多数河流特征，而热带地区几乎没有对流云，并显示了沙丘之类的大量风刻表面特征。惠更斯探测器在认为无法支持对流的纬度上观测到的赤道附近存在小规模的河道和干燥的河床，这被认为是由于地质渗流或其他与降水无关的机制所致。在这里，我们报告热带纬度地区存在明亮，短暂的对流层云。我们发现，云活动的初始脉冲产生了行星波，这些波激发了土卫六其他纬度上至少无云的纬度云活动。这些观察结果表明，一个纬度上的对流脉冲可以触发其他纬度上的短期对流，甚至是那些通常不被认为能够支持对流的纬度，也可以解释惠更斯登陆点附近存在甲烷雕刻的河流和河道。

著录项

  • 来源
    《Nature》 |2009年第7257期|873-875|共3页
  • 作者

    E. L. Schaller; H. G. Roe; T. Schneider; M. E. Brown;

  • 作者单位

    Institute for Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA;

    Lowell Observatory, Flagstaff, Arizona 86001, USA;

    Geological and Planetary Sciences California Institute of Technology, Pasadena, California 91125, USA Environmental Science and Engineering, California Institute of Technology, Pasadena, California 91125, USA;

    Geological and Planetary Sciences California Institute of Technology, Pasadena, California 91125, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 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