搜索结果: 1-15 共查到“理学 San Francisco Bay”相关记录16条 . 查询时间(0.046 秒)
Sea-level rise may worsen existing San Francisco Bay Area inequities
sea-level rise community structure climate change
2021/8/3
Researchers examined the number of households unable to pay for damages from coastal flooding to reveal how sea-level rise could threaten the fabric of Bay Area communities over the next 40 years.
One Wet Winter Can Shake Up San Francisco Bay’s Invasive Species（图）
One Wet Winter San Francisco Bay Invasive Species
2017/12/19
For many Californians, last year’s wet winter triggered a case of whiplash. After five years of drought, rain from October 2016 to February 2017 broke more than a century of records. In San Francisco ...
Dynamics of barotropic low-frequency fluctuations in San Francisco Bay during upwelling
Hydrodynamic modeling Low-frequency fluctuations San Francisco Bay
2015/6/30
Observations of wind, surface elevations, and currents in San Francisco Bay during the 1999 upwelling season are analyzed to understand the dynamics of low-frequency currents in upwelling-dominated es...
Role of phytoplankton in mercury cycling in the San Francisco Bay estuary
Role of phytoplankton he San Francisco Bay estuary
2014/4/17
To study the role of phytoplankton in mercury cycling, we measured methylmercury (MeHg) and total
mercury (HgT) in surface waters during the spring 2003 phytoplankton bloom in San Francisco Bay. Cond...
Low-Frequency Variations in Sea Level and Currents in South San Francisco Bay
Low-Frequency South San Francisco Bay Sea Level
2009/2/7
In order to examine physical process in the subtidal time range, sea-level and current meter data for south San Francisco Bay (South Bay) were filtered using a low-pass digital filter to remove tidal ...
Measurements of N2O5, NO2, and O3 east of the San Francisco Bay
N2O5 NO2 O3 east of the San Francisco Bay
2009/2/6
We report in situ measurements of N2O5, NO2, and O3 in Contra Costa County, California during January 2004. Mixing ratios of N2O5, an intermediate compound in the atmosphere's nocturnal cleansing proc...
Structure and Flow-Induced Variability of the Subtidal Salinity Field in Northern San Francisco Bay
Structure Flow-Induced Variability Subtidal Salinity Field Northern San Francisco Bay
2008/6/20
The structure of the salinity field in northern San Francisco Bay and how it is affected by freshwater flow are discussed. Two datasets are examined: the first is 23 years of daily salinity data taken...
Contrasting biogeochemistry of six trace metals during the rise and decay of a spring phytoplankton bloom in San Francisco Bay
biogeochemistry six trace metals during the rise decay of a spring phytoplankton bloom San Francisco Bay
2014/4/22
The spring 2003 phytoplankton bloom in South San Francisco Bay (South Bay) affected the cycling of Mn, Co, Zn, Ni, and Pb, but not Cu. We followed this diatom bloom for 2 months, capturing a peak in c...
Evaluating the biogeochemical cycle of selenium in San Francisco Bay through modeling
biogeochemical cycle selenium in San Francisco Bay
2014/5/5
A biogeochemical model was developed to simulate salinity, total suspended material, phytoplankton biomass, dissolved selenium concentrations (selenite, selenate, and organic selenide), and particulat...
Nitrogen sources and cycling in the San Francisco Bay Estuary: A nitrate dual isotopic composition approach
Nitrogen sources cycling San Francisco Bay Estuary nitrate dual isotopic composition
2014/5/4
We used the dual isotopic composition of nitrate (δ15N and δ18O) within the estuarine system of San Francisco (SF) Bay, California, to explore the utility of this approach for tracing sources and cycl...
We constructed water, salt, and nutrient budgets for San Francisco Bay and used them to analyze the net biogeochemical performance of the bay. The bay was subdivided into three sectors, North, Central...
Sediment–water exchange of total mercury and monomethyl mercury in the San Francisco Bay–Delta
Sediment–water exchange monomethyl mercury
2014/5/19
Five field trips were conducted in the San Francisco Bay–Delta between May 2000 and October 2001 to investigate the sediment–water exchange of total mercury (Hg) and monomethyl mercury (MMHg). S...
Clams as CO2 generators: The Potamocorbula amurensis example in San Francisco Bay
Clams as CO2 generators Potamocorbula amurensis example San Francisco Bay
2014/5/22
Respiration and calcium carbonate production by the invasive Asian clam, Potamocorbula amurensis, were calculated to assess their importance as CO2 sources in northern San Francisco Bay. Production, c...
Distribution of particulate, colloidal, and dissolved mercury in San Francisco Bay estuary. 1. Total mercury
particulate colloidal dissolved mercury
2014/5/21
Surface water samples were collected from the San Francisco Bay estuary in September–October 2000 (low flow)
and March 2001 (high flow). Total mercury (Hg) concentrations were measured in...
Distribution of particulate, colloidal, and dissolved mercury in San Francisco Bay estuary. 2. Monomethyl mercury
particulate colloidal dissolved mercury
2014/5/21
The phase speciation and estuarine behavior of monomethyl mercury (MeHg) were determined in surface waters
of the San Francisco Bay estuary in September–October 2000 (low flow) and March 2001 (...