東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Modeling remobilization of sediment-...

Hwang, Byunggi.

FindBook

Google Book

Amazon

博客來

Modeling remobilization of sediment-bound contaminants in sediments and their fate and transport in overlying waters.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Modeling remobilization of sediment-bound contaminants in sediments and their fate and transport in overlying waters./
作者:	Hwang, Byunggi.
面頁冊數:	175 p.
附註:	Source: Dissertation Abstracts International, Volume: 56-09, Section: B, page: 5038.
Contained By:	Dissertation Abstracts International56-09B.
標題:	Engineering, Civil. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9600474

Modeling remobilization of sediment-bound contaminants in sediments and their fate and transport in overlying waters.
Hwang, Byunggi.

Modeling remobilization of sediment-bound contaminants in sediments and their fate and transport in overlying waters. - 175 p.

Source: Dissertation Abstracts International, Volume: 56-09, Section: B, page: 5038.

Thesis (Ph.D.)--University of Virginia, 1995.

There is a general consensus that having contaminants settled into bed sediments does not mean permanent removal of toxics from potential availability to aquatic biota. Contaminants adsorbed to the bottom sediment can be stirred up and re-enter the water column under the influence of currents. Toxic compounds in the sediment interstitial waters also can return to the water column by diffusion or the activities of benthic organisms. In addition, the potential exposure of biota to sediment-bound chemicals is important in understanding the uptake of chemicals. Suspended solids regulate the concentrations of toxic chemicals in water by sorbing the chemicals, making them not bioavailable. Hence, there is a growing need for models to predict the amount of a chemical that can be sorbed to the suspended solids and exist in the dissolved form, which is bioavailable.Subjects--Topical Terms:

783781
Engineering, Civil.

Modeling remobilization of sediment-bound contaminants in sediments and their fate and transport in overlying waters.
LDR:02973nmm 2200301 4500 001 1813881
005 20060503132700.5
008 130610s1995 eng d
035 $a (UnM)AAI9600474
035 $a AAI9600474
040 $a UnM $c UnM
100 1 $a Hwang, Byunggi. $3 1903370
245 1 0 $a Modeling remobilization of sediment-bound contaminants in sediments and their fate and transport in overlying waters.
300 $a 175 p.
500 $a Source: Dissertation Abstracts International, Volume: 56-09, Section: B, page: 5038.
500 $a Adviser: Wu-Seng Lung.
502 $a Thesis (Ph.D.)--University of Virginia, 1995.
520 $a There is a general consensus that having contaminants settled into bed sediments does not mean permanent removal of toxics from potential availability to aquatic biota. Contaminants adsorbed to the bottom sediment can be stirred up and re-enter the water column under the influence of currents. Toxic compounds in the sediment interstitial waters also can return to the water column by diffusion or the activities of benthic organisms. In addition, the potential exposure of biota to sediment-bound chemicals is important in understanding the uptake of chemicals. Suspended solids regulate the concentrations of toxic chemicals in water by sorbing the chemicals, making them not bioavailable. Hence, there is a growing need for models to predict the amount of a chemical that can be sorbed to the suspended solids and exist in the dissolved form, which is bioavailable.
520 $a In this dissertation, we develop a comprehensive modeling framework linking a hydrodynamic model, a sediment transport model, and a contaminant model. The hydrodynamic model generates velocity fields, which drive the sediment transport model, and the toxic model. The sediment model predicts the movement of cohesive sediment in estuarine and coastal waters, and provides the temporal variation and spatial distribution of suspended sediment concentrations. Since temporal variation of suspended sediment concentrations over a tidal cycle plays an especially important role in binding toxic chemicals, the intra-tidal varying concentrations are taken into account in the toxic model. The toxic model is developed to quantify interactions between sediments and sediment-bound chemicals and their influence on aquatic biota. Modeling bioavailability involves adsorption of toxicants on the surface of sediment particles, their desorption to sediment pore waters, and their exchange between the sediments bed and water column. The entire framework is applied to predict the fate and transport of polychlorinated biphenyls (PCBs) in the New Bedford harbor.
590 $a School code: 0246.
650 4 $a Engineering, Civil. $3 783781
650 4 $a Engineering, Mechanical. $3 783786
650 4 $a Engineering, Sanitary and Municipal. $3 1018731
650 4 $a Environmental Sciences. $3 676987
690 $a 0543
690 $a 0548
690 $a 0554
690 $a 0768
710 2 0 $a University of Virginia. $3 645578
773 0 $t Dissertation Abstracts International $g 56-09B.
790 1 0 $a Lung, Wu-Seng, $e advisor
790 $a 0246
791 $a Ph.D.
792 $a 1995
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9600474