在结果中检索
  Communities
  Subjects
  All Items
作者
Resource Type
研究报告 [5]
Issued Date
2017 [1]
keyword
discipline
Language
Source
globalchange

Search Results

 Help

Item hits: (Results 1-5 of 5)

Filters    
Items/Page:    Sort:
Trends in the quality of water in New Jersey streams, water years 1971–2011 [研究报告]
10.3133/sir20165176U.S. Geological Survey. 2017-01-01
Hickman, R. Edward whickman@usgs.gov;  Hirsch, Robert M. rhirsch@usgs.gov
View/Download：0/0
 
Nitrate in the Mississippi River and its tributaries, 1980-2010: an update [研究报告]
10.3133/sir20135169U.S. Geological Survey. 2013-01-01
Murphy, Jennifer C. jmurphy@usgs.gov;  Hirsch, Robert M. rhirsch@usgs.gov;  Sprague, Lori A. lsprague@usgs.gov
View  |  Adobe PDF(1884Kb)  |  View/Download：2/2
 
Comparison of two regression-based approaches for determining nutrient and sediment fluxes and trends in the Chesapeake Bay watershed [研究报告]
U.S. Geological Survey. 2012-01-01
Moyer, Douglas dlmoyer@usgs.gov;  Hirsch, Robert M. rhirsch@usgs.gov;  Hyer, Kenneth kenhyer@usgs.gov
Adobe PDF(6397Kb)  |  View/Download：3/3
 
Flux of nitrogen, phosphorus, and suspended sediment from the Susquehanna River Basin to the Chesapeake Bay during Tropical Storm Lee, September 2011, as an indicator of the effects of reservoir sedimentation on water quality [研究报告]
U.S. Geological Survey. 2012-01-01
Hirsch, Robert M. rhirsch@usgs.gov
View  |  Adobe PDF(2466Kb)  |  View/Download：1/1
 
Spatial and temporal trends in runoff at long-term streamgages within and near the Chesapeake Bay Watershed [研究报告]
U.S. Geological Survey. 2012-01-01
Rice, Karen C. kcrice@usgs.gov;  Hirsch, Robert M. rhirsch@usgs.gov
View  |  Adobe PDF(5712Kb)  |  View/Download：4/4
 

1