scholarly journals TIPOLOGI PESISIR KAWASAN KARST KABUPATEN WONOGIRI

2017 ◽  
Author(s):  
Ahmad Cahyadi ◽  
Ardila Yananto ◽  
Filialdi Nur Hidayat
Keyword(s):  
Rip Current ◽  
Erosion Coast ◽  
Wave Erosion

Penelitian ini bertujuan untuk (1) menganalisis tipologi pesisir di Kawasan Karst Kabupaten Wonogiri, Provinsi Jawa Tengah, (2) Menganalisis potensi yang terdapat di lokasi kajian, dan (3) menganalisis permasalahan yang ada di lokasi kajian. Penentuan tipologi pesisir didasarkan pada klasifikasi Shepard (1972) yang termuat dalam pedoman survei cepat terintegrasi yang disusun oleh Fakultas Geografi UGM dan BAKOSURTANAL (sekarang BIG). Analisis potensi dan permasalahan dilakukan dengan melakukan survei lapangan, wawancara, dan kajian pustaka. Hasil kajian menunjukkan bahwa tipologi pesisir di Kabupaten Wonogiri terdiri dari tiga jenis tipologi pesisir, yaitu; wave erosion coast, marine deposition coast dan structurally shaped coast; potensi pesisir Kabupaten Wonogiri terdiri dari potensi pariwisata, pertanian, peternakan dan perikanan; dan permasalahan yang ada di pesisir Kabupaten Wonogiri terdiri dari sarana dan prasarana yang terbatas, aksesibilitas yang kurang baik, bencana tsunami, rip current dan keterbatasan sumberdaya air.

scholarly journals KAJIAN GENESIS DAN DINAMIKA WILAYAH PESISIR KAWASAN KARST PULAU SEMPU KABUPATEN MALANG PROVINSI JAWA TIMUR

2017 ◽  
Author(s):  
Ahmad Cahyadi ◽  
Bayu Argadyanto Prabawa ◽  
Adrian Valentino Tanaem ◽  
Dini Feti Anggraini
Keyword(s):  
Purposive Sampling ◽  
Erosion Coast ◽  
Wave Erosion

Penelitian ini bertujuan untuk (1) mengidentifikasi tipologi pesisir Pulau Sempu; (2) menjelaskan genesis pesisir Pulau Sempu; dan (3) menjelaskan berbagai macam dinamika pesisir Pulau Sempu. Metode penelitian dilakukan dengan membuat peta tentative tipologi pesisir Pulau Sempu berdasarkan pada peta RBI skala 1: 25.000 yang kemudian dilanjutkan dengan melakukan survey lapangan dengan purposive sampling dan mengelilingi Pulau Sempu dengan menggunakan kapal. Hasil penelitian menunjukkan bahwa (1) tipologi pesisir Pulau Sempu terdiri atas wave erosion coast, land erosion coast, structurally shaped coast, dan sub-aerial depositional coast,; (2) genesis pesisir Pulau Sempu diawali oleh proses pengangkatan yang meninggalkan jejak cliff, lalu terjadina erosi lahan dan abrasi oleh ombak yang meninggalkan jejak berupa rockfall dan stach, sedangkan genesis mangrove berasal dari substrat lumpur hasil erosi perbukitan; dan (3) dinamika pesisir timur dan selatan Pulau Sempu didominasi oleh proses geodinamika tektonik pada masa lampau dan hidrodinamika ombak dan gelombang laut pada masa sekarang, pesisir barat didominasi oleh morfodinamika erosi dan hidrodinamika gelombang laut, sedangkan pesisir utara bekerja morfodinamika erosi dan sedimentasi.

scholarly journals Analisis Preferensi Visual Lanskap Pesisir Daerah Istimewa Yogyakarta untuk Pengembangan Pariwisata Pesisir Menuju pada Pengelolaan Wilayah Pesisir Berkelanjutan

2008 ◽  
Vol 22 (1) ◽  
pp. 44 ◽  
Author(s):  
Nurul Khakhim ◽  
Dedi Soedharma ◽  
Ani Mardiastuti ◽  
Vincentius P. Siregar ◽  
Mennofatria Boer
Keyword(s):  
Coastal Management ◽  
Coastal Area ◽  
Karst Area ◽  
Response Process ◽  
Visual Preference ◽  
Process System ◽  
Erosion Coast ◽  
Wave Erosion ◽  
Aerial Deposition

The aim of this research is to analyze of DIY coastal landscape with visual preference analysis for suistanble coastal tourism development and management. The unit of analysis that used is coastal typology. The guideline in deciding the classification of coastal typology is using the Response-Process System with relief/slope, main constructing material, genesis process and dominate process happened in the meantime such as tide, wave and river flow. This response-process system divide the coastal typology into seven classes including coastal typology of land erosion coast, sub aerial deposition coast, volcanic coast, structurally shaped coast, wave erosion coast, marine deposition coast and coast built by organism. The method of SBE (Scenic Beauty Estimation) is used for visual preference analysis, and the method used to compose the policy of costal tourism development is SWOT method. Result shows that all seven coastal typology are found in the coastal area. Land erosion coast and coast built by organism dominate in Gunungkidul coastal area and then in Bantul and Kulon Progo coastal area are dominated by marine deposition coast and sub aerial deposition coast. Volcanic coast, structurally shaped coast, wave erosion coast can only be found in a small area of Gunungkidul coast. Each of this coastal typology has a special land characteristic which can be used to develop its potential. Coast built by organism is very suitable for tourism activity proved by the high score of SBE from the respondents. Recommendation for developing coastal area in area of interest is by developing the coastal natural resources suitable to its physical typology, because this will make the management of coastal area for continuous development easier. Recommendations for coastal management in Gunungkidul including mapping and classification of protected karst area and mineable karst area to secure the run of coastal area management, for coastal management in Bantul using Managed realignment which plans for retreat and adopts engineering solutions that recognise natural processes of adjustment, and identifying a new line of defence where to construct new defences and move seaword model by constructing new defenses seaward the original ones. Last, for Kulon Progo coastal area using hold the line model whereby seawalls are constructed around the coastlines.

scholarly journals EVOLUSI TIPOLOGI PESISIR KAWASAN KARST DI PANTAI WATUKODOK KABUPATEN GUNUNGKIDUL

2017 ◽  
Author(s):  
Ahmad Cahyadi ◽  
Henky Nugraha ◽  
Efrinda Ari Ayuningtyas ◽  
Muhammad Abdul Azis Ramdani
Keyword(s):  
Erosion Coast ◽  
Wave Erosion

Kajian tentang evolusi tipologi akan sangat membantu dalam melakukan perencanaan pengelolaan di masa mendatang. Hal ini karena kajian tentang genesis suatu wilayah pesisir akan sangat membantu dalam melakukan analisis dinamika pesisir dan kerawanan terhadap bencana. Penelitian ini dilakukan di Pantai Watukodok, Kecamatan Tanjungsari, Kabupaten Gunungkidul yang merupakan objek wisata yang baru dikembangkan. Penelitian ini bertujuan untuk (1) mengetahui tipologi pesisir Pantai Watukodok, dan (2) melakukan rekonstruksi tipologi pesisir Watukodok Kabupaten Gunungkidul. Hasil analisis menunjukkan bahwa tipologi pesisir di Pantai Watukodok terdiri dari marine deposition coast dan wave erosion coast. Evolusi tipologi wilayah Pantai Watukodok dimulai dengan tipologi structurally shaped coast, kemudian berubah menjadi wave erosion coast, dan yang terakhir menjadi marine deposition coast.

scholarly journals TIPOLOGI, DINAMIKA, DAN POTENSI BENCANA ALAM DI KAWASAN PESISIR KABUPATEN TULUNGAGUNG

EKOLOGIA ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 14-23
Author(s):  
Anggoro Putranto
Keyword(s):  
Natural Disasters ◽  
Environmental Conditions ◽  
Coastal Area ◽  
Human Activities ◽  
Water Waves ◽  
Sea Water ◽  
Sea Water Intrusion ◽  
Erosion Coast ◽  
Wave Erosion ◽  
Aerial Deposition

This study aims to determine the typology, dynamics and potential of natural disasters in the coastal area of Tulungagung Regency, East Java Province. The results of this study indicate that the typology in the coastal area of Tuluagung Regency consists of structurally shaped coast, wave erosion coast, marine deposition coast, land erosion coast, sub aerial deposition coast and several forms of typology impact from human activities utilizing coastal resources. The form of dynamics that develop in the coastal area of Tulungagung Regency is generally influenced by environmental conditions, factors of sea water waves and human activities in meeting the needs of life as well as for meeting the means of tourism development. While the potential for disasters in the coastal areas of Tulungagung Regency such as tsunami, abrasion, and sea water intrusion.

ACCUMULATION-DEFLATIONARY PROCESSES ON MARINE SAND BARS COASTS OF THE SOUTHERN-EAST BALTIC

2018 ◽  
Author(s):  
Е. Бадюкова ◽  
E. Badyukova ◽  
Леонид Жиндарев ◽  
Leonid Zhindarev ◽  
Светлана Лукьянова ◽  
...  
Keyword(s):  
Sand Bars ◽  
Marine Sand ◽  
Wave Erosion ◽  
Dune Ridge ◽  
Sea Wave ◽  
Sea Coast

Modern accumulative and deflation forms of a coastal eolian relief on the sea coast of Kuronian and Vistula Spits are considered. It is established that on coastal barriers there are at the same time processes of accretion and degradation of a dune ridge and leaned against it foredune. Alternation of stable and erosive sites of a dune ridge is revealed. The last has destruction signs as with sea (wave erosion), and from the land side where the whirls of a wind stream creating numerous deflation basins in dune ridge have great value.

THE IMPROVEMENT OF RISK MANAGEMENT AWARENESS BY VISUALIZED RIP CURRENT AMONG BEACH USERS

2019 ◽  
Vol 75 (2) ◽  
pp. I_701-I_706
Author(s):  
Shintaro ENDO ◽  
Haruka SHIMOIDA ◽  
Toshinori ISHIKAWA ◽  
Tsutomu KOMINE
Keyword(s):  
Risk Management ◽  
Rip Current

Rip Current Research Using a CCTV Image Analysis Including Swimmer Detecting Techniques at Haeundae Beach, Korea

2014 ◽  
Vol 72 ◽  
pp. 33-38 ◽  
Author(s):  
Jin Sang Hwang ◽  
Hong Sik Yun ◽  
Yong Cheol Suh ◽  
Jooyong Lee ◽  
Seong Chan Kang
Keyword(s):  
Image Analysis ◽  
Rip Current

Rip current rescues on unguarded beaches

Shore & Beach ◽  
2021 ◽  
pp. 41-45
Author(s):  
Aubrey Litzinger ◽  
Stephen Leatherman
Keyword(s):  
Young Person ◽  
Red Cross ◽  
Rip Current ◽  
Rip Currents ◽  
Water Ring ◽  
The U.S

Rip currents are the greatest danger at surf beaches. Professional lifeguards rescue tens of thousands of people every year at U.S. beaches, but only a small percentage of the nation’s beaches are guarded. Oftentimes it is a young person who is caught in a rip current, and a bystander will attempt a rescue without a flotation device. The U.S. Lifesaving Association strongly suggests that this kind of rescue should not be undertaken because too often the rescuer will drown. Some coastal towns such as Cocoa Beach in Florida are now posting ring buoys on their unguarded beaches with the warning to throw, but not to go into the water. Ring buoys of two different weights were tested for efficiency when thrown in terms of distance and accuracy. The participants threw the ring buoys two different ways: one way of their choosing (un-instructed) and second by Red Cross recommendation (instructed). The buoyancy was also tested for each buoy. While these flotation devices have some merit, they clearly have limitations.

Formation and preservation of marine terraces during multiple sea level stands

2021 ◽  
Author(s):  
Luca C Malatesta ◽  
Noah J. Finnegan ◽  
Kimberly Huppert ◽  
Emily Carreño
Keyword(s):  
Sea Level ◽  
Basic Assumption ◽  
Cumulative Exposure ◽  
Marine Terrace ◽  
Uplift Rate ◽  
Marine Terraces ◽  
Uplift Rates ◽  
Ca 50 ◽  
Wave Erosion ◽  
Mis 5E

<p>Marine terraces are a cornerstone for the study of paleo sea level and crustal deformation. Commonly, individual erosive marine terraces are attributed to unique sea level high-stands. This stems from early reasoning that marine platforms could only be significantly widened under moderate rates of sea level rise as at the beginning of an interglacial and preserved onshore by subsequent sea level fall. However, if marine terraces are only created during brief windows at the start of interglacials, this implies that terraces are unchanged over the vast majority of their evolution, despite an often complex submergence history during which waves are constantly acting on the coastline, regardless of the sea level stand.<span> </span></p><p>Here, we question the basic assumption that individual marine terraces are uniquely linked to distinct sea level high stands and highlight how a single marine terrace can be created By reoccupation of the same uplifting platform by successive sea level stands. We then identify the biases that such polygenetic terraces can introduce into relative sea level reconstructions and inferences of rock uplift rates from marine terrace chronostratigraphy.</p><p>Over time, a terrace’s cumulative exposure to wave erosion depends on the local rock uplift rate. Faster rock uplift rates lead to less frequent (fewer reoccupations) or even single episodes of wave erosion of an uplifting terrace and the generation and preservation of numerous terraces. Whereas slower rock uplift rates lead to repeated erosion of a smaller number of polygenetic terraces. The frequency and duration of terrace exposure to wave erosion at sea level depend strongly on rock uplift rate.</p><p>Certain rock uplift rates may therefore promote the generation and preservation of particular terraces (e.g. those eroded during recent interglacials). For example, under a rock uplift rate of ca. 1.2 mm/yr, Marine Isotope Stage (MIS) 5e (ca. 120 ka) would resubmerge a terrace eroded ca. 50 kyr earlier for tens of kyr during MIS 6d–e stages (ca. 190–170 ka) and expose it to further wave erosion at sea level. This reoccupation could accordingly promote the formation of a particularly wide or well planed terrace associated with MIS 5e with a greater chance of being preserved and identified. This effect is potentially illustrated by a global compilation of rock uplift rates derived from MIS 5e terraces. It shows an unusual abundance of marine terraces documenting uplift rates between 0.8 and 1.2 mm/yr, supporting the hypothesis that these uplift rates promote exposure of the same terrace to wave erosion during multiple sea level stands.</p><p>Hence, the elevations and widths of terraces eroded during specific sea level stands vary widely from site-to-site and depend on local rock uplift rate. Terraces do not necessarily correspond to an elevation close to that of the latest sea level high-stand but may reflect the elevation of an older, longer-lived, occupation. This leads to potential misidentification of terraces if each terrace in a sequence is assumed to form uniquely at successive interglacial high stands and to reflect their elevations.</p>

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