scholarly journals Differences in the transient responses of individual glaciers: a case study of the Cascade Mountains of Washington State, USA

2022 ◽  
pp. 1-13
Author(s):  
John Erich Christian ◽  
Erin Whorton ◽  
Evan Carnahan ◽  
Michelle Koutnik ◽  
Gerard Roe
Keyword(s):  
Response Times ◽  
Simple Calculation ◽  
Washington State ◽  
Individual Response ◽  
Mountain Range ◽  
Basic Principles ◽  
Mountain Glaciers ◽  
Glacier Changes ◽  
Glacier Runoff

Abstract Mountain glaciers have response times that govern retreat due to anthropogenic climate change. We use geometric attributes to estimate individual response times for 383 glaciers in the Cascade mountain range of Washington State, USA. Approximately 90% of estimated response times are between 10 and 60 years, with many large glaciers on the short end of this distribution. A simple model of glacier dynamics shows that this range of response times entails consequential differences in recent and ongoing glacier changes: glaciers with decadal response times have nearly kept pace with anthropogenic warming, but those with multi-decadal response times are far from equilibrium, and their additional committed retreat stands well beyond natural variability. These differences have implications for changes in glacier runoff. A simple calculation highlights that transient peaks in area-integrated melt, either at the onset of forcing or due to variations in forcing, depend on the glacier's response time and degree of disequilibrium. We conclude that differences in individual response times should be considered when assessing the state of a population of glaciers and modeling their future response. These differences in response can arise simply from a range of different glacier geometries, and the same basic principles can be expected in other regions as well.

Is Distance to Drop Box an Appropriate Proxy for Drop Box Treatment? A Case Study of Washington State

2021 ◽  
pp. 1532673X2110221
Author(s):  
Loren Collingwood ◽  
Benjamin Gonzalez O’Brien
Keyword(s):  
United States ◽  
Voter Turnout ◽  
The United States ◽  
Washington State ◽  
Individual Level ◽  
Primary 52 ◽  
The One ◽  
Vote By Mail

In the United States, drop box mail-in voting has increased, particularly in the all vote by mail (VBM) states of Washington, Colorado, Utah, and Oregon. To assess if drop boxes improve voter turnout, research proxies box treatment by voters’ residence distance to nearest drop box. However, no research has tested the assumption that voters use drop boxes nearest their residence more so than they do other drop boxes. Using individual-level voter data from a 2020 Washington State election, we show that voters are more likely to use the nearest drop box to their residence relative to other drop boxes. In Washington’s 2020 August primary, 52% of drop box voters in our data used their nearest drop box. Moreover, those who either (1) vote by mail, or (2) used a different drop box from the one closest to their residence live further away from their closest drop box. Implications are discussed.

Strengthening of box girder bridges with external prestressing - case study for the Langeland Bridge.

2021 ◽  
Author(s):  
Ulrik Sloth Andersen
Keyword(s):  
Additional Analysis ◽  
Box Girders ◽  
Box Girder Bridges ◽  
Box Girder ◽  
Basic Principles ◽  
Structural Assessment ◽  
South Eastern ◽  
Girder Bridges ◽  
External Prestressing

<p>This paper presents the basic principles for strengthening of bridges and other structures through the use of external prestressing. A case study that includes strengthening of the approach spans for the Langeland Bridge in the south-eastern part of Denmark is included.</p><p>During a recent rehabilitation, corrosion of the post-tensioned tendons was discovered inside the box girders of the bridge. Additional analysis of the extent of the corrosion and a structural assessment was undertaken. Based on this, a strengthening project was carried out, and strengthening with external prestressing is currently being implemented.</p>

Long-term legacy of delayed climate mitigation in global glacier response

2021 ◽  
Author(s):  
Fabien Maussion ◽  
Quentin Lejeune ◽  
Ben Marzeion ◽  
Matthias Mengel ◽  
David Rounce ◽  
...  
Keyword(s):  
Sea Level Rise ◽  
Greenhouse Gas ◽  
Sea Level ◽  
Climate Mitigation ◽  
Delayed Response ◽  
Glacier Change ◽  
Mountain Glaciers ◽  
Glacier Runoff ◽  
The Impact

&lt;p&gt;Mountain glaciers have a delayed response to climate change and are expected to continue to melt long after greenhouse gas emissions have stopped, with consequences both for sea-level rise and water resources. In this contribution, we use the Open Global Glacier Model (OGGM) to compute global glacier volume and runoff changes until the year 2300 under a suite of stylized greenhouse gas emission characterized by (i) the year at which anthropogenic emissions culminate, (ii) their reduction rates after peak emissions and (iii) whether they lead to a long-term global temperature stabilization or decline. We show that even under scenarios that achieve the Paris Agreement goal of holding global-mean temperature below 2&amp;#8201;&amp;#176;C, glacier contribution to sea-level rise will continue well beyond 2100. Because of this delayed response, the year of peak emissions (i.e. the timing of mitigation action) has a stronger influence on mit-term global glacier change than other emission scenario characteristics, while long-term change is dependent on all factors. We also discuss the impact of early climate mitigation on regional glacier change and the consequences for glacier runoff, both short-term (where some basins are expected to experience an increase of glacier runoff) and long-term (where all regions are expecting a net-zero or even negative glacier contribution to total runoff), underlining the importance of mountain glaciers for regional water availability at all timescales.&lt;/p&gt;

scholarly journals Stimulus-response time to invasive blood pressure alarms: implications for the safety of critical-care patients

2014 ◽  
Vol 35 (2) ◽  
pp. 135-141 ◽  
Author(s):  
Adele Kuckartz Pergher ◽  
Roberto Carlos Lyra da Silva
Keyword(s):  
Blood Pressure ◽  
Response Time ◽  
Response Times ◽  
Hemodynamic Instability ◽  
Military Hospital ◽  
Invasive Blood Pressure ◽  
Stimulus Response ◽  
The City ◽  
Physical Layout

Observational, descriptive, exploratory, case study with the objective of measuring the stimulus-response time of the team to alarms monitoring invasive blood pressure (IBP) and analyzing the implications of this time for the safety of the patient. From January to March 2013, 60 hours of structured observation were conducted with registration of the alarms activated by IBP monitors in an adult ICU at a military hospital in the city of Rio de Janeiro. 76 IBP alarms were recorded (1.26 alarms/hour), 21 of which (28%) were attended to and 55 (72%) considered as fatigued. The average response time to the alarms was 2 min. 45 sec. The deficit in human resource and physical layout were factors determining the delay in response to the alarms. The increase in response times to these alarms may compromise the safety of patients with hemodynamic instability, especially in situations such as shock and the use of vasoactive drugs.

scholarly journals Outreach at Washington State University: a case study in costs and attendance

2016 ◽  
Author(s):  
Elizabeth A. Bernhardt ◽  
Viktor Bollen ◽  
Thomas M. Bersano ◽  
Sean M. Mossman
Keyword(s):  
Washington State ◽  
State University ◽  
Washington State University

Recent glacier changes and their impact on water resources in Chon and Kichi Naryn Catchments, Kyrgyz Republic

2013 ◽  
Vol 14 (3) ◽  
pp. 444-452 ◽  
Author(s):  
M. Duishonakunov ◽  
S. Imbery ◽  
C. Narama ◽  
A. Mohanty ◽  
L. King
Keyword(s):  
Water Resources ◽  
Catchment Area ◽  
Kyrgyz Republic ◽  
Mountain Ranges ◽  
Glacier Shrinkage ◽  
Mountain Glaciers ◽  
Power Stations ◽  
Glacier Changes ◽  
South Slope ◽  
Water Withdrawals

Naryn basin, which has the largest river catchment area in Kyrgyz Republic and many mountain glaciers, is a huge ‘water tower’ for Kyrgyz Republic and Uzbekistan. Thus, the behavior of its glaciers has a large impact on water resources for the arid flat plain below, providing water for residents, irrigation, and energy in Kyrgyz Republic and Central Asia. We investigated the recent glacier condition in the Naryn basin (Chon Naryn and Kichi Naryn catchments) using topographic maps of 1:25,000 scale and ALOS/AVNIR-2 satellite imagery. For the 45-year period 1965–2010, glacier area decreased by 17.4% in the Akshyirak massif, and by 20.8% in the Borkoldoy, 21.9% in the Jetim, 24.6% in the Jetimbel, 28.9% in the Naryn, 20.8% in the Sook, 20.9% in the Teskey (south-slope glaciers), and 17.8% in the Uchemchek mountain ranges. The dramatic shrinkage was greater for south-facing than for north-facing glaciers, with respective area losses of 23.6 and 19.8%. The glacier shrinkage might affect not only irrigation water withdrawals during summer but also the planning of four cascade power stations to be constructed in the Chon Naryn and Kichi Naryn catchments.

scholarly journals UJI KINERJA DAYA DUKUNG INDIVIDU PONDASI TIANG DENGAN ALAT INSTRUMENT KONTROL PILE DRIVE ANALYZER TEST DI REFINERY UNIT V BALIKPAPAN

2018 ◽  
Vol 1 (2) ◽  
pp. 69
Author(s):  
Sulardi Sulardi
Keyword(s):  
Carrying Capacity ◽  
Research Method ◽  
Basic Principles ◽  
Similar Work ◽  
Control Instrument ◽  
Foundation Pile ◽  
Implementation Method ◽  
Pile Drive ◽  
Test Control

Tujuan penelitian adalah untuk memberikan gambaran rinsip dasar penggunaan alat instrumen kontrol pile drive analyzer dan metode pelaksanaanya pada pengujian daya dukung tiang pancang pondasi tangki kilang Pertamina Unit V Balikpapan. Metode penelitian yang digunakan pada penelitian adalah metode penelitian terapan (penelitian terpakai) dengan metode pendekatan studi kasus unconfidence level terhadap akurasi hasil pemancangan pondasi tiang. Penelitian ini adalah sekaligus technical notes succes story penggunaan alat instrument kontrol PDA test dilingkungan kilang PT. Pertamina RU V Balikpapan. Hasil penelitian menunjukan bahwa berdasarkan hasil uji dengan alat instrumen kontrol PDA test dapat memberikan akurasi yang baik pada daya dukung individu tiang pancang pondasi tangki sehingga tidak ada keraguan terhadap kriteria penerimaan bangunan tangki nantinya. Hasil penelitian ini merekomendasikan bahwa alat instrumen kontrol PDA cocok dan aman digunakan diarea kilang dan dapat dipergunakan untuk pekerjaan sejenis di unit kerja PT. Pertamina yang lain. Kata kunci: Alat instrumen kontrol, pile drive analyzer, daya dukung individu.The aim of the study was to provide an overview of the basic principles of the use of a pile drive analyzer control instrument and its implementation method in testing the carrying capacity of Pertamina Refinery Tank Unit Balikpapan V tank  foundation pile. The research method used in this research is applied research method with the method of using an unconfidence level case study on the accuracy of the results of pile foundation erection. This study is at the same time succesful story technical notes using PDA test control instrument in PT. Pertamina RU V Balikpapan. The results showed that based on the results of tests with PDA test control instruments can provide good accuracy on the carrying capacity of individual tank foundation piles so that there is no doubt about the acceptance criteria of tank building later. The results of this study recommend that PDA control instruments are suitable and safe to use in refinery areas and can be used for similar work in PT. Pertamina other. Keywords: Control instrument, pile drive analyzer, individual bearing capacity.

scholarly journals Washington State's Public Records Act: A Battle in the 2018 Legislature and Beyond

2020 ◽  
Vol 2 (1) ◽  
pp. 23-37
Author(s):  
Peggy Watt
Keyword(s):  
Washington State ◽  
Lessons Learned ◽  
State Legislators ◽  
Crucial Point ◽  
Public Records ◽  
Citizen Activism ◽  
Court Action ◽  
Voter Initiative

This case study documents the battle over the Washington State Public Records Act, which raged from 2017 through the end of 2019, reaching a crucial point through an extraordinary combination of citizen activism, journalistic pressure, and court action. The act, adopted in 1972 by a voter initiative, covers all “agencies,” but state legislators rejected the classification and refused to honor records requests. Journalists successfully challenged the Legislature in court, and in response lawmakers attempted to update the act to allow for secrecy, but failed. Lessons learned from the scuffle may be applied by legislators and transparency advocates in Washington state and throughout the country.

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