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DISTRIBUTION OF ORGANIC MATTER IN SEDIMENTS OF SUNGAI MESJIDESTUARY, PURNAMA MARINE STATION, DUMAI CITY, RIAU PROVINCE Pranata, Eryc; Rifardi, Rifardi; Musrifin, Musrifin
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

ABSTRACK This research was conducted from February to March 2019 which is located in the estuary waters of the Sungai MesjidPurnama Marine Station, Dumai City, Riau Province. Data analysis of organic matter was carried out at the Physical Oceanography Laboratory of Marine SciencesDepartment, Faculty of Fisheries and Marine, University Of Riau. This study aims to determine the distribution of organic matter in sediments in estuary areas that are affected by 2 water masses,currents and semidiurnal tidal analysis distribution of organic matter showed that the distribution of organic matter content at low tide ranged from 4.90 to 16.50 %. The results show that the waterflow of Sungai  Mesjid toPurnama coast there are mangrove ecosystems.During tidal events currents from Sungai Mesjid meet with the mass of water from the RupatStrait. Purnama. Key words :Organic Matter, Sungai Mesjid,Mangrove, Currents, Tides
ANALISIS PASANG SURUT PERAIRAN MUARA SUNGAI MESJID DUMAI Musrifin, Musrifin
Jurnal Perikanan dan Kelautan Vol 16, No 01 (2011)
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.16.01.%p

Abstract

Tidal analyze have been conducted at Sungai Mesjid Estuary by the end of 2007. Fortnightly tidal range was measured by peil-schall. Harmonic Admiraltyanalyze was applied to find out the Formzahl number. Average tidal range was 2,3meter, mean low water level (MLWL) 0,39 meters and mean high water level(MHWL) was 2,7 meters. Based on Formzahl number F = 0,43 the type of tidal ismixed predominantly semidiurnal. Flood and ebb tide occur twice a day where onetidal range is different in height from the other.
Tiga dekade laju perubahan garis pantai di Kota Dumai Mulyadi, Aras; Hamidy, Rasoel; Musrifin, Musrifin; Efriyeldi, Efriyeldi; Jhonnerie, Romie
Dinamika Lingkungan Indonesia Vol 9, No 1 (2022)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (768.884 KB) | DOI: 10.31258/dli.9.1.p.25-31

Abstract

Mapping of coastline changes helps in coastal development and monitoring. The city of Dumai, on the east coast of Riau Province, has undergone significant and radical changes caused by the intervention of humans and nature over the past three decades. This study mapped and measured the rate of change of the coastline of Dumai City for 30 years. The Landsat (TM, and OLI) image series, 1990, 1999, 2008, and 2020 became a data source to generate coastlines through on-screen digitization techniques, then to study the temporal behavior of coastlines using the Digital Shoreline Analysis System (DSAS) and geographic information systems to describe the spatial and temporal variations of coastlines. The results showed that the coastline length during the observation ranged from 123,14 to 125,23 km, while the average accretion rate was 1.17 meters per year while the average abrasion rate was 2.04 meters per year. Those rates of change affected coastline expanded to the sea for 60,82 hectares and eroded 760,20 hectares coastline to the land.