Improving seismic images for frontier exploration in East Coast Canada: Lessons learned

Strategically located midway along the East Coast, the Baltimore region has one of the nation’s most sophisticated intermodal freight and goods movement systems, consisting of an extensive highway system, two Class I and several smaller railroads, an international airport, and a major deepwater seaport. Further, thousands of firms in the Baltimore region are engaged in the handling and transporting of freight. A heightened awareness of the region’s freight movement needs and issues, combined with the Intermodal Surface Transportation Efficiency Act’s emphasis on intermodal transportation planning, resulted in the Baltimore metropolitan planning organization’s (MPO’s) designation of a public-private Freight Movement Task Force to work with MPO staff to provide guidance and advice on freight-related transportation issues and needs. As the Baltimore MPO pursued its aggressive freight movement planning agenda, it was recognized that addressing freight needs and issues would require MPO members and staff to assume roles and pursue transportation planning activities in markedly different ways than they had been pursued traditionally. An examination of the MPO’s efforts to incorporate freight movement issues into the regional transportation planning agenda is provided, with a discussion of the MPO’s progress to date, how various challenges were addressed and overcome, freight planning products developed, and lessons learned from this undertaking that may be instructive to other transportation planning agencies as they venture into the freight planning arena.

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Reconnaissance Report on the 31 March 2002 Earthquake on the East Coast of Taiwan

Earthquake Spectra ◽

10.1193/1.1598438 ◽

2003 ◽

Vol 19 (3) ◽

pp. 531-556 ◽

Cited By ~ 8

Author(s):

C. H. Loh ◽

K. C. Tsai ◽

L. L. Chung ◽

C. H. Yeh

Keyword(s):

Earthquake Engineering ◽

East Coast ◽

Strong Motion ◽

Building Damage ◽

Lessons Learned ◽

Typical Situation ◽

Taipei Basin ◽

Basin Effects ◽

Motion Characteristics ◽

Taiwan Earthquake

On 31 March 2002, an earthquake of magnitude ML=6.8 occurred in northeastern Taiwan that caused five deaths and damage to more than 300 buildings. The earthquake left some important lessons; these lessons were not considered after the 1999 Chi-Chi (Taiwan) earthquake but must be taken into account for the management of a similar situation in the future. This article first presents the strong motion characteristics found from the ground accelerations recorded from this event. In particular, the basin effects on the distribution of ground motion intensities observed in Taipei Basin are critically reviewed. Observations of some severe building damage following the earthquakes are then summarized. The building damage modes for this event, particularly due to the basin effect, are explored in detail. The characteristics of the building disaster reflected a typical situation that can occur in cities located in high seismic risk. Finally, the collapse of the two tower cranes on, and its impact on, the Taipei Financial Center construction site are described in detail. This article presents the main lessons learned from this earthquake in the light of work performed by the research team for natural disaster from the National Center for Research on Earthquake Engineering, Taiwan.

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East Coast Lows and the Pasha Bulker storm - lessons learned nine years on

Journal of Southern Hemisphere Earth System Science ◽

10.22499/3.6602.005 ◽

2016 ◽

Vol 66 (2) ◽

pp. 152-161

Author(s):

Danielle Verdon-Kidd ◽

Anthony Kiem ◽

Garry Willgoose

Keyword(s):

East Coast ◽

Lessons Learned

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East Coast Lows and the Pasha Bulker storm - lessons learned nine years on

Australian Meteorological and Oceanographic Journal ◽

10.22499/3.6002.005 ◽

2016 ◽

Vol 66 (2) ◽

pp. 152-161 ◽

Cited By ~ 1

Author(s):

Danielle C Verdon-Kidd ◽

◽

Anthony S Kiem ◽

Garry R Willgoose ◽

◽

...

Keyword(s):

East Coast ◽

Lessons Learned

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Securing competitive gas supply – a manufacturing perspective

The APPEA Journal ◽

10.1071/aj18317 ◽

2019 ◽

Vol 59 (3) ◽

Cited By ~ 1

Author(s):

Melissa Perrow

Keyword(s):

Natural Gas ◽

Western Australia ◽

East Coast ◽

Lessons Learned ◽

Building Products ◽

Engagement Process ◽

The Right ◽

Gas Supply ◽

Domestic Manufacturer

Brickworks is a domestic manufacturer and large consumer of natural gas and electricity on the east coast of Australia and in Western Australia. Brickworks manufactures building products including bricks which are primarily retailed under name of Austral Bricks. In 2018 Brickworks examined opportunities for securing gas for its business which lead it to transition from a retail customer to wholesale gas buyer. Brickworks will discuss its engagement process with wholesale gas suppliers and lessons learned from the process. To view the video, click the link on the right.

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Pitfall experiences when interpreting complex structure with low-quality seismic images

Interpretation ◽

10.1190/int-2014-0118.1 ◽

2015 ◽

Vol 3 (1) ◽

pp. SB29-SB37 ◽

Cited By ~ 1

Author(s):

Bob A. Hardage

Keyword(s):

Seismic Data ◽

Structural Model ◽

Signal To Noise Ratio ◽

Complex Structure ◽

Lessons Learned ◽

Structural Deformation ◽

Structural Interpretation ◽

Seismic Image ◽

Data Volume ◽

Seismic Images

Structural interpretation of seismic data presents numerous opportunities for encountering interpretational pitfalls, particularly when a seismic image does not have an appropriate signal-to-noise ratio (S/N), or when a subsurface structure is unexpectedly complex. When both conditions exist — low S/N data and severe structural deformation — interpretation pitfalls are almost guaranteed. We analyzed an interpretation done 20 years ago that had to deal with poor seismic data quality and extreme distortion of strata. The lessons learned still apply today. Two things helped the interpretation team develop a viable structural model of the prospect. First, existing industry-accepted formation tops assigned to regional wells were rejected and new log interpretations were done to detect evidence of repeated sections and overturned strata. Second, the frequency content of the 3D seismic data volume was restricted to only the first octave of its seismic spectrum to create better evidence of fault geometries. A logical and workable structural interpretation resulted when these two action steps were taken. To the knowledge of our interpretation team, neither of these approaches had been attempted in the area at the time of this work (early 1990s). We found two pitfalls that may be encountered by other interpreters. The first pitfall was the hazard of accepting long-standing, industry-accepted definitions of the positions of formation tops on well logs. This nonquestioning acceptance of certain log signatures as indications of targeted formation tops led to a serious misinterpretation in our study. The second pitfall was the prevailing passion by geophysicists to create seismic data volumes that have the widest possible frequency spectrum. This interpretation effort showed that the opposite strategy was better at this site and for our data conditions; i.e., it was better to filter seismic images so that they contained only the lowest octave of frequencies in the seismic spectrum.

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East Coast Lows and the Pasha Bulker storm - lessons learned nine years on

Journal of Southern Hemisphere Earth System Science ◽

10.1071/es16013 ◽

2016 ◽

Vol 66 (2) ◽

pp. 152

Author(s):

Danielle C Verdon-Kidd ◽

Anthony S Kiem ◽

Garry R Willgoose

Keyword(s):

East Coast ◽

Critical Infrastructure ◽

National Level ◽

Lessons Learned ◽

Extreme Weather Events ◽

Background Information ◽

Economic Losses ◽

Storm Events ◽

Recovery Processes ◽

The Impact

East Coast Lows (ECLs) are intense low pressure systems that form several times a year off the east coast of Australia. When these systems occur close to land they can cause major damage to infrastructure and communities due to gale force winds, intense rainfall, storm surge and coastal erosion. In June 2007, Newcastle and Central Coast regions of New South Wales (NSW) experienced severe weather and subsequent flash flooding. The ‘Pasha Bulker’ storm, as it has become known, was one of the most significant meteorological events in Australia’s history, with large economic losses and social disruption due to the loss of critical infrastructure. This paper provides background information on the meteorology of the event, the impact of the Pasha Bulker storm and a discussion of the lessons learned from the event and subsequent adaptation strategies employed. The paper also provides important reflections, at both regional and national level, on the Pasha Bulker storm and other similar storm events. Lessons for all levels of government and community groups are discussed, including preparedness before the event, actions during the event, and recovery processes post-event. From this, recommendations and conclusions are made on actions and strategies to increase adaptive capacity and resilience to extreme weather events like ECLs.

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Measuring and comparing solutions for floating marine litter removal: Lessons learned in the south-east coast of the Bay of Biscay from an economic perspective

Marine Policy ◽

10.1016/j.marpol.2021.104450 ◽

2021 ◽

Vol 127 ◽

pp. 104450

Author(s):

Marga Andrés ◽

Matthias Delpey ◽

Irene Ruiz ◽

Amandine Declerck ◽

Caroline Sarrade ◽

...

Keyword(s):

East Coast ◽

Lessons Learned ◽

Bay Of Biscay ◽

Economic Perspective ◽

The South ◽

Marine Litter ◽

Litter Removal

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First Integrated Sand Prevention Approach: Best Practices and Successful Lessons Learned from Deepwater Vashishta and S1 Gas Fields, East Coast of India

10.2118/192052-ms ◽

2018 ◽

Author(s):

Kutbuddin Bhatia ◽

Rajarshi Ray ◽

John Davis

Keyword(s):

Best Practices ◽

East Coast ◽

Lessons Learned ◽

East Coast Of India ◽

Gas Fields ◽

Prevention Approach

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Depth migration as a valuable tool for prospect derisking in the Colombian Foothills

Interpretation ◽

10.1190/int-2017-0042.1 ◽

2017 ◽

Vol 5 (4) ◽

pp. SR13-SR21

Author(s):

Sergio Ibanez Poveda ◽

Mario Patino ◽

John Mathewson

Keyword(s):

Signal To Noise Ratio ◽

Lessons Learned ◽

Initial Assessment ◽

Borehole Data ◽

Depth Migration ◽

Time Migration ◽

Seismic Image ◽

Prestack Time Migration ◽

Definition Of ◽

Seismic Images

Interpreting land seismic data in the Colombian Foothills poses many challenges. Very often, the data have a low signal-to-noise ratio and the subsurface prospective structures are significantly complex. The level of uncertainty can be so high that even experienced interpreters struggle to reconcile the seismic image with their geologic models. Based on previous knowledge and “fast-track” interpretation of old 2D prestack time migration data (no 3D seismic in the area), we identified two interesting plays for further analysis: a triangular zone (play 1) and subthrust anticlines beneath the frontal fault (play 2). Derisking the different prospects associated with plays 1 and 2 required the application of prestack depth migration (PSDM), which reduce uncertainty regarding the position of the structures, their depth, and even their existence. The seismic image in play 1 structures was improved significantly with better definition of the flanks of the anticlines and the frontal closure of the structures, more coherent events, and sharper definition in fault cut-offs. Some apparent play 2 prospects, that were actually “velocity pull-up” anticlines, were corrected by the depth-migration workflow, whereas other structures experience important modifications in their geometry. In both types of plays, depth migration dramatically changed the initial assessment of prospectivity. Based on the better agreement between seismic and borehole data, significant reduction in residual moveout on final PSDM gathers and more coherent seismic images, we believe that the use of depth migration has allowed us to obtain a more accurate representation of the subsurface, and consequently a more rigorous reserves estimation. The use of PSDM was essential to understand the complexities in the prospects evaluated and the risk associated with their exploration. We consider the lessons learned in this study applicable to similar geologic environments worldwide.

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