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River siltation due to tin mining (Record no. 102382)

MARC details
000 -LEADER
fixed length control field	03429nam a2200421 4500
005 - DATE AND TIME OF LATEST TRANSACTION
control field	20260818212834.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field	070198 th eng
035 ## - SYSTEM CONTROL NUMBER
System control number	.b10573926
099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC)
Classification number	AIT Thesis no. 733
100 1# - MAIN ENTRY--PERSONAL NAME
Personal name	Akhtar, Muhammad Ashraf
245 10 - TITLE STATEMENT
Title	River siltation due to tin mining
260 ## - PUBLICATION, DISTRIBUTION, ETC.
Place of publication, distribution, etc.	Bangkok :
Name of publisher, distributor, etc.	Asian Institute of Technology,
Date of publication, distribution, etc.	1975
300 ## - PHYSICAL DESCRIPTION
Extent	93 p.
490 1# - SERIES STATEMENT
Series statement	Thesis ;
Volume/sequential designation	no. 733
500 ## - GENERAL NOTE
General note	A thesis submitted in partial fulfillment of the requirements for the Degree of Master of Engineering at the Asian Institute of Technology, Bangkok, Thailand.
502 ## - DISSERTATION NOTE
Dissertation note	Thesis (M.Eng.) - Asian Institute of Technology, 1975
520 ## - SUMMARY, ETC.
Summary, etc.	The primary purpose of this research was to investigate and evaluate tin mining activities as a source of sediments in the rivers which were causing a severe siltation problem in the Ranong estuary of Thailand. The study was conducted on the three rivers, draining from tin mining areas and were responsible for transporting a huge quantity of sediments into the estuary. As there were no gaging stations on the rivers before the present study, a tank model was calibrated and developed to simulate long term run-off in one of the rivers using-nine-year daily rainfall as input. Unit hydrograph of Thailand was, then, used to find the long term runoff in the other two rivers in order to develop flow duration curves. Functional relationships between water discharge and sediment load were developed to determine sediment rating curves. From the flow-duration and sediment rating curves of the rivers, it was estimated that about 1.7 million tons of sediments were being transported and silted in the estuary and river mouths every year. In this quantity, tin mining areas contributed about 99 percent of the sediments and only 1 percent sediments were from the forest land. Predicted sediment load and sediment dredging data for the silting reach were compared to estimate distribution of sediments in the estuary. It was found that about 34 percent of sediments were being deposited in the silting reaches at the river mouths and remaining 66 percent passed to the estuary.
650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element	Tin mines and mining
General subdivision	Thailand
--	Ranong
650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element	Sedimentation and deposition
700 0# - ADDED ENTRY--PERSONAL NAME
Personal name	Suphat Vongvisessomjai,
Relator term	Chairperson
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name	Nishimura, Hitoshi,
Relator term	Examination Committee
700 0# - ADDED ENTRY--PERSONAL NAME
Personal name	Prida Thimakorn,
Relator term	Examination Committee
710 2# - ADDED ENTRY--CORPORATE NAME
Corporate name or jurisdiction name as entry element	British Government and Habour Department of Thailand,
Relator term	Scholarship Donor
810 2# - SERIES ADDED ENTRY--CORPORATE NAME
Corporate name or jurisdiction name as entry element	Asian Institute of Technology.
Title of a work	Thesis ;
Volume/sequential designation	no. 733
856 ## - ELECTRONIC LOCATION AND ACCESS
Materials specified	Full-Text
Uniform Resource Identifier	<a href="http://203.159.5.9/ait-thesis/detail.php?q=B23987">http://203.159.5.9/ait-thesis/detail.php?q=B23987</a>
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998 ## - LOCAL CONTROL INFORMATION (RLIN)
Operator's initials, OID (RLIN)	2
Cataloger's initials, CIN (RLIN)	951012
First date, FD (RLIN)	m
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945 ## - LOCAL PROCESSING INFORMATION (OCLC)
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945 ## - LOCAL PROCESSING INFORMATION (OCLC)
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945 ## - LOCAL PROCESSING INFORMATION (OCLC)
l	mnait
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type	20-AIT Publication
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type	40-Archives
909 ## - LOCAL ITEMS USED
Barcode	Barcode : 30050003034757
CREATED	CREATED : 1995-10-15
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Holdings
Not for loan	Home library	Current library	Shelving location	Date acquired	Full call number	Barcode	Date last seen	Copy number	Price effective from	Koha item type
Available for Loans	Asian Institute of Technology Library	Asian Institute of Technology Library	AIT Publications	18/08/2026	AIT Thesis no. 733	30050003034757	18/08/2026	2	18/08/2026	20-AIT Publication
Available for Loans	Asian Institute of Technology Library	Asian Institute of Technology Library	Archives	18/08/2026	AIT Thesis no. 733	30050160093133	18/08/2026		18/08/2026	40-Archives
Available for Loans	Asian Institute of Technology Library	Asian Institute of Technology Library	AIT Publications	18/08/2026	AIT Thesis no. 733	30050121098007	18/08/2026	1	18/08/2026	20-AIT Publication

River siltation due to tin mining (Record no. 102382)

AIT

Asian Institute of Technology Library