High Cliffs Research Articles

Sediment provenance analysis of the early Permian reservoirs of the Perth Basin

The sediment provenance of Early Permian reservoirs (‘Kingia’ and High Cliff sandstones) of the onshore North Perth Basin is poorly understood. Bulk rock inorganic geochemistry, detrital zircon geochronology and heavy mineral data have been used to assess spatial and temporal changes in provenance in the vicinity of the Waitsia, Lockyer Deep, West Erregulla and Beharra Springs Deep discoveries. The geochemical data provides a chemostratigraphic framework for the Early Permian that can be confidently correlated throughout the basin. The detrital zircon and Raman data have recognised significant regional variabilities. The zircon data defines western and eastern regions that were separated and/or infilled by different depositional systems, likely defined by the Mountain Bridge Fault. Raman analysis demonstrates that the High Cliff and ‘Kingia’ sediments in the vicinity of Waitsia have different zircon age populations and heavy mineral assemblages, with the ‘Kingia sandstone’ dominated by apatite indicating access to a granitic source at this time. This is poorly represented by wells in the northern Dongara Terrace and Allanooka Terrace, where sediments are dominated by garnet. Analysis of Lockyer Deep and West Erregulla discovery wells in the northern Dandaragan Trough, also demonstrate only minor amounts of apatite, but also include a significant mafic component, the source of which is uncertain. The geochemical data demonstrates that the top of these reservoirs is defined by a highly consistent change in provenance, coincident with a switch to garnet-rich sediments and different dominant zircon age populations.

The impact of exploration/appraisal activities on the recovery per well in North Perth Basin

The North Perth Basin (NPB) in Western Australia has experienced significant petroleum industry activity over the past 3 years (2021–2023), marked by the drilling of exploration and appraisal wells by various operators, along with notable merger and acquisition transactions. This flurry of drilling activity, coupled with the acquisition of new seismic data, have enhanced our understanding of the variability within the primary petroleum play levels – namely, the Permian ‘Kingia’ and High Cliff reservoirs. This understanding is crucial for assessing the future potential of domestic gas supply in Western Australia. This paper aims to elucidate how recent drilling efforts have narrowed the basin-wide portfolio of available gas prospects relative to the situation in early 2021, and how the landscape of undiscovered gas resources has evolved. This shift is attributed to both unsuccessful exploration attempts and revised estimates of well deliverability. Furthermore, an updated long-term production forecast for the NPB – considering existing gas pools and the newly assessed undiscovered resources – emphasises the urgent need to re-evaluate the narrative concerning gas availability for the domestic market. The Permian gas plays within the NPB have proven to be more intricate and unpredictable than previously believed. Nonetheless, their significance to the Western Australian economy is anticipated to be substantial for many years ahead.

Utilization of Unmanned Aerial Vehicle (UAV) Technology to Identify Land Cover in Kedai Damar Village, Serdang Bedagai, North Sumatera

Remote sensing has been widely used in various fields, one of which is to provide information related to land cover classification Kedai Damar Village is one of 13 villages in the Tebing Tinggi sub-district, Serdang Bedagai Regency. The settlement of Kedai Damar is the one that is most remote from the headquarters of the high cliffs sub-district. This settlement is situated in the center of the PT.Perkebunan Nusantara-IV plantation region in Pabatu North Sumatera. As a result, several rural towns have opened shops providing food and other essentials to farmers and farmworkers in order to rely on PT. Perkebunan Nusantara-IV plantation. This research was conducted in the Kedai Damar Village administrative center area using unmanned aircraft technology and then visually interpretation of aerial photos and mapping administrative area land cover in the Kedai Damar Village administrative center area using processed data in the form of orthophoto from agisoft metashape software. Based on the results of the study, the Kedai Damar Village area has 5 types of land cover classifications that can be identified visually based on 9 elements of interpretation (hue, color, shape, size, texture, pattern, shadow, site and association) as well as ground checks or data collection and observations. In the field. there are 5 types of land cover that can be visually identified, including non-oil Palm, open land, factory Area, settlement, oil palm plantations.

Tsunami deposits in Tunisia contemporaneous of the large 365 CE Crete earthquake and Mediterranean Sea catastrophic event

New field investigations along the East Tunisian coastline reveal sedimentary deposits and damaged localities that may account for a catastrophic event during the late Holocene. North of Sfax city, ~ 3.4 m high cliff coastal marine and alluvial terraces show 20 to 50-cm-thick chaotic layer with sandy coarse gravels mixed with reworked pebbles, broken shells of gastropods and molluscs, organic matter and Roman pottery. The chaotic layer truncates sandy-silty paleosol, covers Roman settlements and is overlain by fire remains, a thin sandy-silty aeolian unit and ~ 1-m-thick alluvial deposits. Charcoal samples collected at 10 cm below and 4 cm above the catastrophic deposits provide radiocarbon dating that brackets the catastrophic unit between 286 and 370 CE. Other historical investigations on the Roman sites of Neapolis (Nabeul), Hadrumete (Sousse), Thyna (Sfax), Meninx in Girba (Djerba), Wadi Ennouili (Gulf of Gabes), and Sabratha (in Libya) evidenced major damage and abandonment of sites in the fourth century (16, 41, 42, 43, 44). The new identification of catastrophic deposits, offshore-onshore correlations with turbidites and modelling of tsunami waves suggest the relationship with the 21 July 365 tsunamigenic earthquake (Mw ~ 8) of west Crete (Greece) and call for a better estimate of tsunami risk on the Mediterranean coastlines.

The Variability of the Beach Morphology and the Evolution of the Shoreline in the Strongly Anthropized Sector of Eforie North, the Romanian Coast of the Black Sea

The Eforie Nord sector (between the southern pier of Agigea - Constanta port and the tourist port of Belona), is characterized, from a geomorphological point of view by the presence of high cliffs and narrow beaches. In the mentioned sector, a series of coastal protection works were carried out in several stages, respectively: between 1956 and 1960, 6 groins were placed to etend the perimeter beach; with the epansion of Constanța port, new coastal protection measures were imposed (1981-1986), determined by the erosion processes, made concrete by the eecution of permeable submerged longitudinal dikes in addition to the transversal ones. On long term, the measurements of shore morphological parameters highlighted that the southern sector of the Romanian Black Sea coast is subject to an erosion process, due to the action of both natural and anthropogenic factors, each generating effects with different intensity, depending on local conditions. Within the project “Protection and Rehabilitation of the Southern Part of the Romanian Black Sea Coast, Phase 1” in 2014-2015 period, in the mentioned sector, etended hydrographical works were carried out, including the rehabilitation of dikes, the construction of submerged dikes and beach nourishment. The monitoring of the shore behavior at regular intervals (annual/seasonal) which is essential for an adequate management of the coastal area, highlights both cyclical/seasonal morphological changes (rapid erosion as a result of storms in the cold season and the reconstruction of the beach during summer) and progressive/multiannual changes. The monitoring of morpho dynamic changes at shore level includes the positioning of the shoreline and beach profiles in 6 locations using GPS equipment (geodetic and GIS class). The resulting spatial data were processed and included in the SANDS management system that allows comparative analysis at different time scales. The maps representations were made in the ArcGIS 10.8 system. The data analysis revealed seasonal changes of the shore morphology, both in the longitudinal profile (shoreline) and transversally (beach profiles).

Badewo Kayangan in Okura Pekanbaru Community from Treatment Rituals to Aesthetic Dance: Ecotourism

This research aims to explain the form and function of Badewo Kayangan as a healing ritual in the past and present for the people of Tebing Tinggi Okura. This research is qualitative research with a descriptive approach that understands the phenomenon of the research subject. The data in this research is information obtained through various sources, both sources obtained directly through interviews with sources who know about the Badewo Khayangan dance, video recordings, photographs, and data in the form of documentation. Apart from this data, it is also supported by data in the form of notes obtained during observations. The research findings are that Badewo Kayangan was originally a healing ritual used to cure various diseases, including those caused by supernatural forces in the Okura High Cliff area. As time went by, people began to ask Wak Damai to change Badewo Kayangan into the Badewo Kayangan dance. The movements contained in Badewo Kayangan are combined with new elements and realized in the form of a dance performance known as the Badewo Kayangan dance. Badewo Kayangan has two main roles, namely as a traditional healing ritual and as a means of performing arts or entertainment. By considering the potential of the Badewo Kayangan Tebing Tinggi Okura dance as a local cultural asset, this dance has the potential to become part of the tourism industry based on culture.

Boulder transport and wave height of a seventeenth-century South China Sea tsunami on Penghu Islands, Taiwan

Abstract. The South China Sea faces widespread tsunami risks from diverse sources, including trench megathrusts, intraplate earthquakes, and landslides. However, historical and geological records to constrain worse-case simulations are scarce. The cliff-top basalt boulders on the Penghu Islands in the Taiwan Strait provide wave estimates from incipient motion formulas and stratigraphic links to the probable sources. Calibrating for ancient local sea levels and a 100-year surge indicates that storm waves in the shallow interisland bathymetry only enable boulder sliding–rolling below the 2.5 m high cliff. A minimum tsunami wave height of ∼ 3.2 m is necessary for cliff-top overflow to exceed boulder height and terminal rolling before deposition. Coeval gravels in two other outcrops also record the time and extent of tsunami deposition with beach-derived bioclasts, stranded pumices, a sharp base, matrix support, poor sorting, and elevations surpassing the 100-year surge. These gravels mark local minimum wave run-ups, reaching 2.4–4.0 m above sea level. The radiocarbon age of the studied boulder, between 1575 and 1706, suggests a probable tie to the disastrous 1661 earthquake in southwest Taiwan and the megathrust source in the northern Manila Trench.

Poor Family Classification Decision Support System using the Simple Additive Weighting (SAW) Method

Poverty is a problem that continues to be the focus of attention for the government. Poverty has also caused people to be willing to sacrifice anything for their survival. To anticipate this problem, various policies have been adopted by the government to break the chain of poverty. One of them is providing assistance funds to poor families (PKH). This is felt directly by all levels of underprivileged society. One of the efforts of the Koto Ranah Tapan government to eradicate poverty that occurs in Koto Ranah Tapan is to follow the central government program, namely the launch of government financial assistance (PKH). These funds will be distributed to poor residents in Koto Ranah Tapan through the nagari guardian office in Koto Ranah Tapan. However, the distribution of aid funds to poor families is often not on target due to a large level of manual calculation error which makes the aid not on target and also the office of the nagari village of high cliff village has not been able to objectively determine the families who receive the aid. To help determine which families are worthy of receiving poor family assistance funds, a decision support system is needed. With this Decision Support System (DSS), it is hoped that the decision-making process can minimize the occurrence of wrong targets that often arise in the process of selecting poor families who wish to receive aid funds . In this calculation the author uses the Simple Additive Weighting (SAW) method, because this method is suitable for accurate calculations and is very helpful in calculating any data obtained. The results obtained were that Ade Irma Suryani got the highest score with a score of 10.8 and was ranked at the top (Best 1), so she could be considered the best recipient of aid funds.

Investigating the Impact of Flood on Low Lying Settlements of Delhi, India: A Planning Perspective

In the past, the Yamuna River and the Najafgarh Drainage System have flooded the city of Delhi severely. In the past 33 years, Yamuna has 25 times exceeded its risk threshold, which is set at 204.83m. Since 1900, Delhi has suffered six significant floods when the Yamuna River has reached a height of one metre or more above the accidental 204.49m on the old railway bridge (2.66m above the accident level). These floods happened in 1924, 1947, 1976, 1978, 1988, and 1995. The Yamuna recently climbed more than two metres beyond the danger threshold in Delhi, breaking the milestone 207 metres for the first time in 32 years. The second highest point, at 206.92 metres, was on September 27, 1988. There is a direct impact of floods on the Yamuna River and the city drainage network. People who live along the Yamuna River Belt, on the river's banks, and in the drain are impacted by this. The amount of the solid regions causing local floods has increased landslides as a result of deforestation and local floods. Low-lying communities, particularly haphazard colonies that fall into the water, will be most impacted by this. Hathinikund erupts high in Haryana because of the persistent, intense rainfall on the high cliffs, draining water upstream, continuing to flood Delhi and harming the lives of those who live in low-lying areas. Therefore, torrential rains caused severe damage to the city, and even more so to those families built on the wrong side, which were the first and most frequent sightings of their homes and property being flooded. Families had already begun to lose livestock and livestock during this time, before being evacuated and their situation remains so dire that one has to leave the rest of the house to relocate and relocate when the water level drops. The purpose of the study was to explore about the kind of impacts generally inhabitants face during and post flooding and to find out the implementation of strategies. The following methods were used: Site survey of the case study area in which structured questionnaire and observations were conducted through primary survey, analysis and assessment, study of issues and concerns. As a result, flood prevention, preparedness and mitigation strategies with reference to low lying area have been analyzed and planning recommendations have been proposed.

Pengaruh Karakteristik Wirausaha Dan Modal Usaha Terhadap Perkembangan Gerai UMKM Di Desa Purwodadi Kecamatan Tebing Tinggi Kabupaten Tanjung Jabung Barat

The aims of this study were (1) to determine the influence of entrepreneurial characteristics and venture capital simultaneously on the development of MSME outlets in Purwodadi Village, Tebing Tinggi District, West Tanjung Jabung Regency. (2) To determine the effect of entrepreneurial characteristics and business capital partially on the development of MSME outlets in Purwodadi Village, Tebing Tinggi District, West Tanjung Jabung Regency. This research uses a quantitative descriptive approach. This study explains whether there is an influence of entrepreneurial characteristics and business capital on the development of MSME outlets in Purwodadi Village, Tebing Tinggi District, Tanjung Jabung Barat Regency. The population in this study were all SMEs, totaling 23 SMEs, the researchers used a saturated sampling method. And using the data analysis method Research Instrument Test, Classical Assumption Test, Multiple Linear Regression Analysis, Coefficient of Determination. Based on the results of the F test (simultaneous test) it can be concluded that the entrepreneurial characteristics and venture capital together have a significant effect on the development of MSME outlets in Purwodadi village because the significant value is 0.000 <0.05 and the fcount value is 15.026 > ftable is 3.466, so this means that the entrepreneurial characteristics and venture capital variables simultaneously influence the development of MSME outlets in Purwodadi Village, Cliff High District, West Tanjung Jabung Regency. And based on the results of the T test (partial test) for the two variables of entrepreneurial characteristics and business capital on the development of MSME outlets in Purwodadi village, it can be concluded that the entrepreneurial characteristics and venture capital variables have a positive and significant effect on the development of MSME outlets in Purwodadi Village, High Cliff District, Tanjung Regency. west jab.

The Influence Facilities Towards Teaching Method at MAS Al-Jam’iyatul Washliyah Tebing Tinggi

This study aims to determine, provide a complete and clear picture of the influence of school facilities and infrastructure on the learning process of Mas Al Jam'iyatul Washliyah high cliff students. This research was conducted on level 3 senior high school students in the academic odd semester of 2022/2023. The research methods used in this research are quantitative methods, library research, and quantitative methods. Data collection techniques through direct observation to schools, distributing questionnaires containing several questions and conducting interviews with several teachers, the results obtained from this study are: 1) the school has enough facilities that support the learning process. The most of the students agree that the school has complete facilities that support the learning process. 2) 75% of the total 100%, only about 25% do not agree that the facility is a bad influence. 3) Some teachers do not use school facilities properly so that the existing facilities are not used. 4) There are more students who like the way teacher uses the facility in learning process than do not like it. Those who like it because of the teacher is creative in using the facility.

Remotely piloted aircraft‐based automated vertical surface survey

Remotely Piloted Aircrafts (RPAs) are commonly used as a platform for collecting images which can be processed with Structure from Motion-Multi View Stereo (SfM-MVS) to generate 3D models. However, mobile applications for mapping planning are not designed for image acquisition of vertical surfaces, such as quarry walls or large cliffs, leaving the user to a manual flight operation, which does not ensure optimal overlap between images. Here we describe a workflow, based on the Litchi App, for automated RPA missions designed to acquire images of vertical surfaces or structures.•An easy-to-follow 8 steps method to survey vertical surfaces using a Remotely Piloted Aircraft.•It can be applied to outcrops, quarry walls, high cliffs and virtually any other type of vertical surface.•The workflow is flexible and can be adapted to a variety of target configurations and user-defined parameters.

Средновековната крепост Галата и нейното пристанище

The medieval fortress of Galata was located on the high cliff coast of Cape Galata. Its harbour was located to the west of the cape in a small, but very well-protected bay against winds and sea waves. This article presents information known to date from written sources and scientific literature, as well as the results of remote non-destructive surveys in the area of the cape and the medieval harbour basin. During the analysis of the data from the field surveys, an L-shaped facility was registered that was part of the ancient port’s infrastructure, and fragmented medieval pottery was found. All these data allow accurate localization of the port of the Galata fortress. The results of the field studies suggest a high potential for future detailed studies, both on land and underwater.

Surveying cliff-nesting seabirds with unoccupied aircraft systems in the Gulf of Alaska

Drones, or unoccupied aircraft systems (UAS), can transform the way scientific information on wildlife populations is collected. UAS surveys produce accurate estimates of ground-nesting seabirds and a variety of waterbirds, but few studies have examined the trade-offs of this methodology for counting cliff-nesting seabirds. In this study, we examined how different UAS survey parameters might influence seabird counts for population monitoring and assessed behavioral responses to aerial surveys for three sub-Arctic seabird taxa in the Gulf of Alaska: common murres (Uria aalge), black-legged kittiwakes (Rissa tridactyla), and pelagic and double-crested cormorants (Phalacrocorax pelagicus and Phalacrocorax auritus). We flew two commercially available models of UAS in planned approaches at different speeds and distances from colonies during incubation and chick-rearing periods. We compared counts from UAS-derived images with those from vessel-based photography and assessed video recordings of individual birds’ behaviors for evidence of disturbance during UAS operations and control phases. Count estimates from UAS images were similar to or higher than those from conventional vessel-based images, and UAS were particularly effective at photographing birds at sites with high cliff walls or complex topography. We observed no significant behavioral responses to the UAS by murres or cormorants, but we did observe flushing by black-legged kittiwakes during UAS flights; most of these birds were not incubating or brooding. At both the colony and individual level, we observed slightly greater responses to the smaller UAS platform and closer approaches. These results inform both species specific and general best practices for research and recreational usage of UAS near cliff-nesting seabird colonies.

PERADABAN ISLAM DI KOTA TEBING TINGGI

<p><strong><em> </em></strong>In writing this journal aims to find out the history and civilization of Islam in the cliff town of North Sumatra, in a context that focuses on aspects of aspects and monuments in the city of high cliffs as evidence of Islamic civilization in the city of high cliffs. The study of Islamic civilization in Tebing Tinggi is important because based on its history, Tebing Tinggi was once a kingdom before becoming an autonomous region. The period of Dutch rule in East Sumatra or Dutch colonialism (Hindia Holland) applies in East Sumatra since the signing of the conflict contract between the Dutch. and siak on February 1, 1858. In this agreement it is stated that the kingdom of Siak Sri Indrapura and its colonies and conquests were under the Dutch Sultanate and became part of the Dutch East Indies. The method used is the historical method. The results of this study show the development of the development of Islamic civilization in Tebing Tinggi, divided into several periods, namely the historical period of the high cliff city, the existence of a figure who can be said to be the founder of the high cliff city, and the kingdom of the land of Padang which was the forerunner of the birth of the high cliff city.</p>

Late Quaternary climate change in Australia's arid interior: Evidence from Kati Thanda – Lake Eyre

Williams Point is an iconic late Quaternary sedimentary sequence exposed at the southern margin of Madigan Gulf at Kati Thanda – Lake Eyre (KT-LE), Australia's largest lake. The ∼15 m high cliff outcrop includes 6 m of aeolian sediments, capping a ∼0.5 m beach/shoreline facies containing abundant Coxiella (aquatic gastropod) unconformably overlying 5–6 m of fluvio-lacustrine facies. The base of the outcrop and the playa floor comprises shallow and deeper water laminated lacustrine sediments. We re-examine the stratigraphic sequence using detailed excavations, micromorphological analysis and geochemical characterisation (X-ray fluorescence, X-ray diffraction, palaeoecology, stable isotope analysis of gypsum hydration water and biogenic carbonates, rare earth element analysis) and present a revised chronology using single-grain optically stimulated luminescence (OSL) within a Bayesian framework. Our new chronostratigraphic data generally supports previous interpretations for Williams Point, but crucially refines the timing of several of the key sedimentological units. The deeper-water lacustrine facies on the lake floor, unconformably overlying the Miocene Etadunna Formation, were deposited 206 ± 13 ka (232–169 ka, 95% credible interval; C.I.). A palaeoplaya, or oxidised shallow lake deposits, formed at 153 ± 11 ka (175–131 ka, 95% C.I.) and the uppermost shallow water lacustrine facies at the base of the cliff was deposited at 131 ± 9 ka (150–113 ka, 95% C.I.). An unconformity separates these sediments from the overlying fluvio-lacustrine phase, securely constrained (with eight OSL samples) to 86 ± 4 ka (95–78 ka, 95% C.I.). The isotopic composition of the palaeo-lake water (δ18O and δD), reconstructed from the hydration water of syndepositional gypsum formed in-situ in these fluvio-lacustrine sediments, indicates wetter conditions at 95–78 ka than at ca. 232–131 ka. Based on the provenance analysis these fluvio-lacustrine and lacustrine sediments were sourced from the northern catchments within the Lake Eyre basin but with an additional contribution from the northern Flinders Ranges. An erosional unconformity separates this sedimentary unit from the overlying Coxiella beach facies, which itself dates to 71 ± 4 ka (79–63 ka; 95% C.I.). This beach facies is interpreted to represent a regressional shoreline or near-shore deposit formed during Marine Isotope Stage [MIS] 4. This is the most reliable palaeolake level indicator in the sequence and indicates a maximum water depth of 12 m. The overlying Williams Point aeolian unit (WPAU) dates to 49 ± 4 ka (56–41 ka, 95% C.I.), slightly younger than previous estimates. The modelled age for WPAU overlaps with (and is within uncertainty of) the last KT-LE megalake phase, which reached +5 m AHD at 48 ± 2 ka. However, considering its elevation (−3 to +3 m AHD), the age of this gypsiferous aeolian unit demands that it accreted as KT-LE was entering a playa phase with lengthy periods of exposed lake floor. In turn, this means that the putative Genyornis newtoni (a megafaunal flightless bird) which laid its eggs in the gypsiferous dunes, went extinct during a time of hydrological transformation. These results bring fresh perspectives to a site that has held a heavy sway over previous views of the Quaternary history of Australia's arid zone.

The Effect of Prior Experience and Trust on Customer Loyalty with Satisfaction as an Intervening Variable

This study aims to find out how the Effect of Prior Experience and Trust on Customer Loyalty with Satisfaction as an Intervening Variable (Case Study on PT. High Cliff City Branch Pawnshop). The population in this study is all CUSTOMERS of PT. High Cliff Branch Pawnshop. In determining the sample, the slovin formula was used with the purposive sampling technique, the sample taken was 91 respondents. The analysis tool in this study was data processing using the help of IBM SPSS 25.0 0 for windows. The results of hypothesis testing use the t test (Partial) and to test the intervening variables of researchers using the path analysis method. From this test it can be concluded that based on the results of the analysis of hypothesis 1 it can be seen that t count ( 3.584 ) > t table ( 1.662 ), similarly with the significance value of 0.001 < 0.05 then it can be concluded that the first hypothesis of dit Erima, meaning that the Prior Experience Variable (X1) has an effect on the Satisfaction Variable (Z), hypothesis 2 can be known that t count ( 22.258 ) > t table ( 1.662 ), and the significance value is 0.000 < 0.05 then it can be concluded that the second hypothesis is accepted.

Geotechnical Study of Raspadalica Cliff Rockfall, Croatia

The Raspadalica Cliff is an almost vertical 100 m high limestone cliff with a railway line at its foot and is known for numerous rockfall occurrences in the past. This article presents the results of the geotechnical study of the cliff based on a traditional geological and geotechnical field survey and remote sensing analysis. Both the traditional geological and geotechnical field survey and remote sensing surveys and analyses enabled the establishment of the structural model of the Raspadalica Cliff and the determination of the discontinuity sets and discontinuity features, such as orientation, spacing, persistence, roughness, discontinuity wall strength, aperture, degree of weathering of discontinuity wall, seepage conditions, and the presence and hardness of discontinuity filling. Kinematic analyses were performed on five cliff zones with slightly different structural features, indicating a relatively low probability of typical failures in the cliff rock mass that precede the rockfall occurrences. Although rockfall phenomena from the cliff face are relatively frequent, the kinematic analyses did not indicate a high probability of their occurrence. The aim of this manuscript is to make scientists and practitioners aware that investigation of rock mass cliffs and possible rockfall failures must not be based on usual methods without critical review of the obtained results and consequences. The combined use of traditional geological and geotechnical methods and more commonly used advanced remote sensing methods leads to better modelling, while the analysis of more associated failure modes can explain the triggering of rockfall.

Meeting Attendance Design Using Web-Based Qrcode On Diskominfo Kota Tebing Tinggi

Attendance is an activity carried out by a person to prove himself or not present in a meeting. The current condition of the presence of the meeting in the High Cliff City Diskominfo is still done by manual handwriting. This is ineffective and efficient and causes inaccurate attendance data obtained,so a system is needed that makes attendance effective and efficient for employees of the agency. Therefore, the Meeting Attendance System Design was created using a Web-based QR Code with PHP programming language and MySQL database. The system was created aimed at facilitating the process of the presence of agency employees and making it easier for High Cliff Diskominfo in the data of employees who have done absenteeism. The system is made by utilizing QR Code technology to make it easier for employees to do attendance absences no longer write manuals but by only scanning QR Codes when for absence. The system created has a QR Code scanning feature from qr code that has been created in admin, for scanning can use a webcam on a Personal Computer(PC). The implementation of this QR Code, is expected to make the attendance system easier and is expected to facilitate employees of the High Cliff City Diskominfo in carrying out meeting absences.

Concurrent 13. Presentation for: Exploration and appraisal year in review 2021

Presented on Wednesday 18 May: Session 13 Petroleum exploration and appraisal activity increased in 2021. Exploration spend increased for the year, continuing a positive trend. Onshore exploration and appraisal activity continues to dominate the petroleum exploration scene in Australia. Positive indications of increased work program bids (wells, seismic and spend) are, however, tempered by the downward trend of total exploration acreage (by area) and new acreage awards. In addition to petroleum exploration acreage, greenhouse gas sequestration acreage was released across Australia in 2021. Twenty-nine exploration wells were drilled in the year compared to twenty-five in the previous year. Eight conventional petroleum discoveries were reported, with the Artisan-1 discovery in the Otway Basin being the only offshore discovery. The Lockyer Deep-1 gas discovery in the Northern Perth Basin continues the exploration success of the Permian Kingia and High Cliff Sandstone play. The Cooper–Eromanga Basin continues to yield discoveries with the Odin-1, Rosebay-1, Lowry South, Liger-1 and Chimera-1 discoveries reported for the year. Thirty-one appraisal wells were drilled for the year with significant activity in the Northern Perth Basin, Cooper-Eromanga Basin and Bowen-Surat Basins. Exploration and appraisal drilling also continued in the Beetaloo Sub-basin with the drilling of the Tanumbirini-2H, Tanumbirini-3H and Carpentaria-2/2H wells during the year. To access the presentation click the link on the right. To read the full paper click here