THIS PAPER PRESENTS PRELIMINARY RESULTS OF AN UNDERGOING GEOMORPHIC ASSESSMENT OF CHABAHAR BAY CONDUCTED AS PART OF THE MONITORING AND MODELING STUDY OF SOME COASTAL PARTS OF SISTAN AND BALUCHESTAN AND BUSHEHR PROVINCES (MONITOR SB&B) PROJECT, INITIATED BY THE PORTS AND SHIPPING ORGANIZATION. THE FIRST PHASE OF THE MONITOR SB&B PROJECT INCLUDES A NUMBER OF INVESTIGATIONS COVERING SITE VISITS, OVERFLIGHT, GIS ANALYSIS OF HISTORIC AIRPHOTOS AND CHARTS, HYDROGRAPHIC AND TOPOGRAPHIC SURVEYS, A 25-YEAR WAVE HINDCAST, EXTENSIVE FIELD MEASUREMENTS AND VARIOUS 2DH AND 3D NUMERICAL MODELING OF HYDRODYNAMICS AND SEDIMENT TRANSPORT OF THE CHABAHAR AREA. THIS PAPER SUMMARIZES OUR OBSERVATIONS DURING A SITE VISIT COMPLETED IN JUNE 2006.

HEAT BUDGET IS ONE OF THE MOST IMPORTANT FACTORS IN PHYSICAL STUDY OF SEAS AND OCEANS. DUE TO ITS EFFECT ON ENVIRONMENTAL FACTORS AND LEVELING MARINE STRUCTURES AS WELL AS SEA WATER LEVEL, STUDY OF HEAT BUDGET HAS OF A GREAT IMPORTANCE. STUDYING VARIOUS PARAMETERS INCLUDING THE SUNSHINE ANGEL, CLOUDINESS OF THE SKY, ALBEDO OF WATER SURFACE, AIR SPECIAL HUMIDITY, ATMOSPHERE STRUCTURE, SHORTWAVE SUNSHINE, NET SUNSHINE WITH LONG-WAVE, SENSIBLE HEAT TRANSFER, EVAPORATION HEAT TRANSFER, HEAT TRANSFER BY OCEANIC STREAMS AND RAINING, WIND SPEED, AND LOCAL DIMENSIONLESS (SENSIBLE AND LATENT HEAT FLUX COEFFICIENT), THIS STUDY HAS CALCULATED THE HEAT BUDGET FLUX IN THE BAY ON THE BASIS OF DATA OBTAINED FROM IRANIAN METEOROLOGICAL ORGANIZATION AND THE MOST RECENT FORMULATIONS. THE RESULTS SHOW THAT IN THE YEAR OF 2005, CHABAHAR BAY SAW THE SHORT-WAVE RADIATION FLUX OF (+227.56 W/M2), NET LONG-WAVE FLUX OF (-59.91 W/M2), INSENSIBLE EVAPORATION HEAT FLUX OF (-112.16 W/M2), AND SENSIBLE HEAT FLUX OF (-8.00W/M2). CONSIDERING THE ABOVE MENTIONED PARAMETERS, HEAT BUDGET FLUX IN THIS BAY IS EQUALS TO (+47.49 W/M2). IN ORDER TO ACHIEVE HEAT BALANCE, IT IS REQUIRED THAT SUCH HEAT FLUX EXIT FROM THE BAY THROUGH WATER EXCHANGE BETWEEN OMAN SEA AND CHABAHAR BAY AS WELL AS RAINING.

PREDICTION OF THE SEDIMENT TRANSPORT RATE IS A MAIN REQUIREMENT IN COASTAL ENGINEERING. ALTHOUGH IN MOST CASES SEDIMENT TRANSPORT TAKES PLACE MAINLY BY WAVES AND CURRENTS, THERE ARE ALSO CASES WHERE SEDIMENTS ARE TRANSPORTED BY WIND. IN SUCH CIRCUMSTANCES, REFRAINING FROM SEDIMENT TRANSPORT IN SEDIMENTARY BUDGET LEADS TO LARGE ERRORS IN THE DETERMINATION OF SEDIMENTARY COMPONENT. DESPITE OTHER MECHANISMS OF SEDIMENT TRANSPORTATION, THERE ARE A FEW RESEARCHES ON THE WIND SEDIMENTS TRANSPORTS. IN THIS PAPER, WIND SEDIMENT TRANSPORT IN THE CHABAHAR BAY DESALINATION PLANT IS STUDIED.

INTRODUCTIONTHIS REGION HAS COMMERCIAL AND STRATEGIC SPECIAL IMPORTANCE IN THE CHABAHAR PORT AND A LARGE AMOUNT OF GOODS WILL BE LOADED FROM THIS JETTY. FOR SPENDING EARLY LIFE OF ANY AQUATIC ANIMAL, THE CLAM AND MINIMUM STRESS IN AREA IS NECESSARY. THIS STUDY WAS DESIGNED TO INVESTIGATE OF HUMAN ACTIVITY AND STREETS EFFECTS ON THE FISH LARVA ASSEMBLAGE BY COMPARING THEIR COMMUNITY CHANGE IN DAY AND NIGHT PERIODS…

PHYSICAL AND CHEMICAL PROPERTIES OF SEAWATER HAVE A SIGNIFICANT IMPACT ON THE METABOLISM OF AQUATIC ORGANISMS, SO SMALL CHANGES IN THESE PARAMETERS SUCH AS PH AND NUTRIENTS; CAN HAVE A PROMINENT ROLE IN THE GROWTH AND DEVELOPMENT OF MARINE ORGANISMS [1]. IN THIS STUDY THE PHYSICOCHEMICAL PARAMETERS OF CHABAHAR BAY AND SOME COASTAL ZONES IN GULF OF OMAN INCLUDING: ALKALINITY, TEMPERATURE, SALINITY, PH, DISSOLVED OXYGEN AND NUTRIENTS WERE MEASURED IN PRE- AND PAST-MONSOON SEASONS AT 10 STATIONS FOR THE FIRST TIME. OUR STUDY CONSISTS OF SIX STATIONS WITHIN THE CHABAHAR BAY, TWO STATIONS IN POZM AND TWO STATIONS IN COASTAL WATERS IN THE PORT OF RAMIN. STATIONS WERE SELECTED AT DEPTHS OF APPROXIMATELY 5 AND 10 M.IN PRE-MONSOON THE LOWEST SALINITY WAS 36 IN POZM AND MAXIMUM SALINITY WAS 37.6 IN THE NEAR OF TIS HARBOR. AVERAGE PH WAS 8.12. THE AMOUNT OF DISSOLVED OXYGEN WAS IN THE RANGE OF 6.13 TO 7.54 MILLIGRAMS PER LITER. MAXIMUM LEVEL OF ALKALINITY WAS 2.47±0.04 MMOL H+/KG AND THE LOWEST ALKALINITY WAS 2.43±0.02MMOL H+/KG. NITRATE CONCENTRATIONS WERE IN THE RANGE OF 7.2 ± 4 TO 25 ± 8 ΜG/ L.IN PAST-MONSOON THE LOWEST SALINITY WAS RAMIN 36.3 AND THE MAXIMUM SALINITY WAS 37 IN CHABAHAR BAY. THE LOWEST TEMPERATURE WAS 24.1°C IN KONARAK IN CHABAHAR BAY AND MAXIMUM TEMPERATURE WAS 26.6°C IN THE WATERS OF RAMIN. PHOSPHATE CONCENTRATIONS OF SURFACE WATERS WERE IN THE RANGE OF 17.7 TO 58 MG/L. THE LEVEL OF ALKALINITY WERE IN THE RANGE OF 2.444±0.004 TO 2.426±0.004 MMOL H+/KG WITH A MEAN 2.439 MMOL /KG AT THIS SEASON. SINCE THE ALKALINITY IS RELATED TO THE SALINITY, AND BECAUSE OF THE NARROW RANGE OF SALINITY CHANGES IN THE STUDIED AREA AT PRE- AND PAST-MONSOON, THE VARIATION RANGE OF ALKALINITY WAS NARROW (FIGURE 1).