نتایج جستجو برای: supratidal environment
تعداد نتایج: 517929 فیلتر نتایج به سال:
سازند گچساران به عنوان پوش سنگ مخزن نفتی آسماری در حوضه زاگرس محسوب می‌شود که در مناطق فروافتادگی دزفول- لرستان تا حوضه خلیج‌فارس گسترش دارد. ضخامت لایه‌های تشکیل‌دهنده این بخش به تدریج از قاعده به سمت بالا، کاهش پیدا کرده و عمده لیتولوژی آن شامل انیدریت، مارنهای خاکستری و قرمز، نمک و میان لایه‌های آهکی می‌باشد. مطالعات پتروگرافی این بخش بافت‌های نودولار، جانشینی، انترالیتیک، پورفیروبل...
Aquatic organisms respond to environmental stresses through physiological and morphological adaptations. Accordingly, benthic fish such as the Mudskippers are often referred as bioindicators or sentinel species of aquatic ecosystems such as mangrove forests and mudflats. In the present study, during sampling from three coastal areas of Bandar Abbas (Khorabi, Khajeh Ata and Soro estuary), three ...
This study proposes a standardization process for monitoring the level of tar mat contamination in Arabian Gulf. In study, we selected target gastropod species and evaluated ecological ecotoxicological effects mats on their populations, bioaccumulation heavy metals, these species’ potential as bioindicator taxa mat-associated metals. The was carried out at two sites Qatar coast shoreline rocks,...
Coastal aeolian sediment transport in an active bed surface layer: Tracer study and conceptual model
Coastal aeolian sediment transport is influenced by supply-limiting factors caused sorting grain size. Sorting processes can lead to coarsening of the bed surface and influence formation ripples. However, bedforms might have on magnitude not fully understood. This study explores their mode using tracers. Sand was painted in different colors according particle size placed a supratidal beach Noor...
this research concentrates on the lithostratigraphy, biostratigraphy, microfacies and sedimentary environment of the asmari and gachsaran formations at southwest firuzabad. the thickness of the studied section in all 608.95 meters that 220.8 meters belong to the asmari formation and 387.95 meters belong to the gachsaran formation (champe and mol members). in the study area, the asmari formation...
Abstract This study provides an overview and discussion of controls on the distribution organic reefs during Early Ordovican Period, in Yangtze Platform, a region epicontinental sedimentary rocks South China. The Platform was located low latitudes Ordovician recorded rich diverse through that time. During late Tremadocian Epoch, dolomitic stratiform stromatolites were common supratidal to inter...
Abstract. Hypersaline tidal flats (HTFs) are coastal ecosystems with freshwater deficits often occurring in arid or semi-arid regions near mangrove supratidal zones no major fluvial contributions. Here, we estimate that organic carbon (OC), total nitrogen (TN) and phosphorus (TP) were buried at rates averaging 21 (±6), 1.7 (±0.3) 1.4 gm-2yr-1, respectively, during the previous century three con...
during natural gas processing, water in natural gas may cause to hydrates formation in pipelines which may lead to serious damages to process equipments. given the problems raised by present of water in natural gas, glycol solvent uses to remove water.in contact of glycol with gas always an amount of btex and voc absorb along with water, which on glycol recovery process, these substances separa...
abstractof two mcall programs introducing 100 vocabulary items through two im the researcher of the present study was intrigued to compare the effects age modalities (pictures and streaming video) with those of a conventional method (teacher instruction) in an efl context. she set out to investigate whether such multimedia environments could provide a more effective environment for vocabulary...
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